DIY: What are the tools that every Do-it-Yourselfer must own?

What are the tools that every DIY'er should have? This is a community wiki as there is no one right answer.

Instructions:

  • One item per answer (so they can be voted on - answers with multiple items will be voted down)
  • Clear formatting like this:
    [ITEM NAME]
    [Reason why item is essential/useful/good]
    [Photo / other info]
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Can you ever have enough? - Richard Tasker 12 years ago
78 Answers Found

A cordless drill
No doubt about it. I bought a DeWalt 14.4V three years ago, and it's been invaluable to me. alt text http://www.homedepot.com/catalog/productImages/300/34/34c4b1f5-f4c7-465c-b9bb-f0a9ba2cd2ef_300.jpg

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Why cordless? I'm assuming your home has outlets? - Joe Phillips 12 years ago
@Joe - everything is easier with a cordless drill. I have a very nice corded drill and I probably use it twice a year. The cordless one I use all the time. - Eric Petroelje 12 years ago
Cordless is nice, but I never get much use out of them. Since I work only intermittently on DIY projects I find the batteries brick out on me after only getting to use them 2-3 times. - JohnFx 12 years ago
My Dewalt 14v cordless sits around for months at a time and still holds a charge. It's a beast. - Adam Robinson 12 years ago
I must say, DeWault makes nice cordless drills. - Joe Phillips 12 years ago
I have a DeWalt cordless drill and circular saw 18V XRP. They hold a charge well and are good for anything which is not a huge job. Because the batteries are interchangeable, you can always keep them charged pretty easily. - Cade Roux 12 years ago
Cordless drills have basically replaced hammers in this day and age. Not that you'll never need a hammer, but the times I find myself using one are getting fewer and further between. - jessecurry 12 years ago
I have a Ryobi 12V cordless, and my corded drill has gotten very lonely. I keep one battery on the charger, and a fresh battery will last me for a few weeks of intermittent work. - Jared Harley 12 years ago

A good weight crowbar
Use it for lifting, prying, removing, bashing, demolishing and most importantly, against zombies and headcrabs.

Crowbar vs Headcrab http://db.tt/F4NCQj

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+1 just for the Halflife reference, though it's headcrabs. - Adam Robinson 12 years ago
Ah! My sleepy head made a headcrab/facehugger hybrid. Fixed. - Ates Goral 12 years ago
I prefer a Fubar, purely for the name :) homedepot.com/h_d1/N-5yc1vZ1xgg/R-100488979/h_d2/… - ManiacZX 12 years ago
I can't help but wonder if this is so high in vote counts just because of the Half-Life reference. - Doresoom 12 years ago
We all Gordon Freeman. - Soner Gönül 11 years ago
I would add prybars, large and small, used more often than a crowbar on interior work. - bib 10 years ago

A good, stiff measuring tape

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Measure once, cut twice! - Joe Phillips 12 years ago
@Joe, something's off about that... :-) - Mike Sherov 12 years ago
Measure twice, cut once, swear thrice! - Ates Goral 12 years ago
For distances less than two meters, I prefer to use a measuring stick (paintbrushesandrollers.com/images/products/630200.jpg). - Vebjorn Ljosa 12 years ago
Just don't cut the measuring tape. That really doesn't make the day any better. - BLAKE 11 years ago

Utility Knife

For about $10-15 USD you can get 100 utility knife blades, so you don't have to worry about sharpening your knife/breaking the blade (except your eyes of course!).

I use mine for all sorts of stuff.

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My favorite utility knife: stanleytools.com/… - myron-semack 12 years ago
I prefer this one: milwaukeetool.com/hand-tools/utility-knives/48-22-1901. Beefy in the hand unlike the Kobalt folder, but because it does fold it's more compact. The gut hook, wire cutters and the one-handed flick open/close mechanism all make it a great general utility knife (though check your jurisdiction; the mechanism may make it illegal as a "switchblade" or "gravity knife". - KeithS 9 years ago

A first aid kit

...that is easy to find!

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...and can be used with one hand - Adam Robinson 12 years ago
I love how Adam's comment has more upvotes than the answer ;) - Wayne Werner 12 years ago
Nah, masking tape is all you need. - Vebjorn Ljosa 12 years ago
Super glue will hold way better than masking tape! - Doresoom 12 years ago
Super glue is amazing liquid skin. - Wayne Werner 12 years ago
Does a box of bandaids qualify as a "kit"? - Stephen 11 years ago

A multimeter

a multimeter (licensed under the Creative Commons Attribution-Share Alike 2.5 Generic license)

(Image licensed under the Creative Commons)

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Typically referred to as a Multi-meter. - Brad Gilbert 12 years ago
I've had mine for a number of years, and lost one of the lead wires. However, I had a wire with clips on both ends. Clip a 16P nail into each clip; one in the socket, the other as your tip. Don't use for anything over 12V, of course! - GalacticCowboy 12 years ago
I've got one of these and never really learned to use it. Mostly I just stick to a voltage tester with an LED. - JohnFx 12 years ago
Yes, the picture is of a multimeter, not any tester. - XTL 12 years ago
Does it also include function to detect emf? - Larry Morries 11 years ago
I'm giving this a downvote. I don't think every DIYer needs one of these. I have no idea what one of these even does. - samthebrand 10 years ago
I disagree; this is a good tool to have if you're doing electrical work. The thing you'd use it for most is to check continuity of wire joins, but checks for proper voltage are useful too. - KeithS 10 years ago

Needle-nose pliers

diy: what are tools every do-it-yourselfer must own?

These are the most often used tool in my toolbox, not that they ever make it back into the toolbox.

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I think I saw mine migrating through the bathroom yesterday...can't remember how they got there. - Doresoom 12 years ago
My wife has requisitioned a few pairs over the years as weed pullers for the yard. Nothing like finding my pliers caked with dirt... thanks, dear! - Jared Harley 12 years ago
I'm sure she says the same thing about her good fabric scissors when she finds you've been using them for home improvement tasks, Jared ;) - Wayne Werner 12 years ago

Hammers and screwdrivers.

You aren't going to get much done without them...

A good jigsaw can be very helpful for many tasks as well.

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What type of hammers? What type of screw drivers? - Joe Phillips 12 years ago
@Joe Phillips - given your name, I assume you were fishing for a specific kind of screwdriver.... I have made do with one simple claw hammer for years now. Screwdrivers really should be bought in bulk, I seem to lose/break them a lot. - Josh Goldshlag 12 years ago
Wasn't actually fishing but you raise an interesting point. Phillips screwdrivers are the best! But seriously, I don't think it's necessary to have a sledge hammer which is why I asked. - Joe Phillips 12 years ago

Speed square

alt text

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You can get them for about $3 ($1 if you wait for a sale) at harbor freight. The measurement markers aren't as nice as the more expensive variety, but they're just as square. - Wayne Werner 12 years ago
Pardon the ignorance, but what do you use this for? - Portman 12 years ago
@Portman: It's like a protractor for DIY projects/construction in general. - Doresoom 12 years ago
You can use it quickly cut a straight cut on a 2x4 with a circular saw. Any other uses? - Greg 12 years ago
These come in different sizes, but I like a small (7") one in my back pocket. - Jay Bazuzi 10 years ago

Locking pliers
Commonly known by the genericised trademark "Vise-Grip"

diy: what are tools every do-it-yourselfer must own?

I find that I use it one way or another on every project I do.

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Also called "the wrong tool for every job". - XTL 12 years ago
I deliberately bought a small vice-grip to stop me over-using it. - staticsan 12 years ago
Aka mole grips - superb name. - Umber Ferrule 11 years ago
This tool can do everything...but usually it breaks something in the process. - Malfist 10 years ago

A power miter saw (compound if possible).

It will cut anything you'd cut with a circular saw (other than large sheets), and you'll also be able to cut any trim pieces you'll ever need. Adding and replacing trim is a relatively easy thing to do and can quickly add value and better the appearance of a house. Few things come as close the a bang-for-the-buck arena.

alt text http://www.besthometoolsale.com/images/dewalt-miter-saw-dw717.jpg

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This is next on my wish list... - Doresoom 12 years ago
Next to my cordless drill, this is probably my most used power tool. The disadvantage of course is that they are big and expensive. Can't beat them for framing or trim work though. - Eric Petroelje 12 years ago
Sure it's on the must-have-list, but as a replacement for a circular saw? That's just crazytalk. The two saws have totally different uses. - Commander Keen 12 years ago
@Commander Keen: I'm not so sure that they're totally different. Yes, you can do things with each that you can't do with the other, but a miter saw can do just about anything that a circular saw can (save for, as noted above, cutting large sheets like plywood). Is there something I'm forgetting? - Adam Robinson 12 years ago
@Adam: What else do you use a circular saw for? I prefer a plunge saw, and have sold my circular saw though. - Commander Keen 12 years ago
You can get an el-cheapo miter saw on black friday for ~$50. Perfect for light duty use. - Greg 12 years ago
If you don't have the room for a drop-saw, a jigsaw can do many of the same jobs. - staticsan 11 years ago
Does the cordless one produce emf? - Larry Morries 11 years ago

Non-Contact Voltage Tester.
This comes in very handy to make sure you turned off the correct circuit breaker before doing any electrical work. And really helps if you have some funky wiring in your house and not everything in a single box is on the same circuit.

Non-Contact Voltage Tester http://ecx.images-amazon.com/images/I/2149063ZRQL._SL500_AA300_.jpg

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Or even just checking to see if there's an electrical cable inside the wall where you're getting ready to drill... - Jared Harley 12 years ago
Actually most aren't that sensitive, unfortunately. I have one of the ones in the picture, and you have to pretty much stick it into the plug to get it to light. - KeithS 9 years ago

Screwdriver set

screwdrivers http://img339.imageshack.us/img339/7803/31032044.jpg

Your exact types will differ by country, but you likely want:

  • Slot-head (2 or 3 sizes)
  • Phillips (atleast size #3, maybe #2 and #4)
  • Robertson (atleast red, green, and black)

Rubber handles will save your hands after a bit of use. Also, try to find black tipped drivers, as this means they're hardened and shouldn't wear down as quickly.

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What is a Robertson screw driver? - Joe Phillips 12 years ago
@Joe : Robertson heads have square sockets en.wikipedia.org/wiki/List_of_screw_drives - Doresoom 12 years ago
Add a flexible shaft, and ratcheting screwdriver that takes different heads, and you sold me. - JohnFx 12 years ago
And perhaps a flat-head that doesn't slip out of the screw. - Adam Robinson 12 years ago
Screw Driver Tips: Look for ones with a softer rubber handle. Your hands will thank you when you are trying to drive in several screws in quick succession. Also, look for ones with the black tips, as these are hardened and less likely to get chewed up from regular use. - myron-semack 12 years ago
Thanks for the links (Doresoom) and the advice (msemack). I'll roll it into the original answer. - Steve Armstrong 12 years ago

A reciprocating saw (a.ka. sawzall) -

  1. Makes short work of any tearout job.
  2. Gets into places that other saws can't.
  3. Great stand-in for a chainsaw outside (for small stuff)
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A poor man's version would be a jab saw - I picked one up for $10 or so when I needed to put a junction box in my ceiling. - Doresoom 12 years ago
best. tool. evar. - dave thieben 12 years ago
The more HP the better, and get good, appropriate blades (wood for wood, metal for metal, etc). - BryanH 10 years ago
This, and a good drill, are the two must-own power tools for any homeowner. The last point on the list is critical; a nice long wood or demo blade will make mincemeat of that dead branch in your backyard, and the "trash tree" saplings that have gotten beyond the ability of your bypass loppers. - KeithS 9 years ago

Set of standard and metric allen keys.

alt text http://ecx.images-amazon.com/images/I/51DD9ETKNZL._SL500_AA300_.jpg

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Frankly, I've never had a job where I needed an allan wrench that didn't come with one. I have a drawer full of these from buying cheap furniture. - JohnFx 12 years ago
True. There are those edge cases where you need to disassemble/reassemble something and having an organized (and sturdy) set of allen keys can save the day. - spoulson 12 years ago
The cheap ones that come with Ikea furniture slip and get rounded too easily. They are also too short to be comfortable. I am glad I have one that is longer and of better-quality steel. - Vebjorn Ljosa 12 years ago
These seem to be useful for grinding down into other, more useful, tools - Joe Phillips 12 years ago
The Ikea ones are cheap, but then I have 500 of them so they are pretty much disposable. - JohnFx 12 years ago
I think you mean imperial and metric - MGOwen 12 years ago
We are not imperialists! - spoulson 12 years ago
Allen keys are probably my most used tool! Look at your bike! - sixtyfootersdude 12 years ago

Quick clamps.

alt text http://www.diyskate.com/img/ramps/tools/quick_clamp.jpg

about a million times better than these:

alt text

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A circular saw of course.

And don't skimp - you'll use it enough that it's worthwhile to spend the money and get a decent (and light) one.

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How would you respond to the "power miter saw" answer that suggests it can do the job of a circular saw for many projects? - myron-semack 12 years ago
@msemack - I would agree. I have a 10" sliding compound miter saw that I use FAR more than my circular saw. But a good miter saw is big and expensive. A circular saw has more utility than a miter saw, and is much cheaper and smaller (easier to store). The disadvantage of the circular saw is speed and accuracy. Much easier and faster to make nice cuts with a miter saw. - Eric Petroelje 12 years ago

Good levels of different sizes

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+1 I just put in shelving in my pantry that's exactly 47" in width. Too bad all I had was my 48" level and a 12" level. :/ - Doresoom 12 years ago
I have a 4' level, 2 different 2' levels and a couple of bullet levels (4", 9"). And they all get used pretty regularly. - GalacticCowboy 12 years ago

A good set of channel lock pliers (multiple sizes).

Use them on almost every job, especially plumbing.

alt text http://img294.imageshack.us/img294/6085/39540403.jpg

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And never buy just one - especially for plumbing. Seems like if you need one you always need two (one to turn something and the other to keep the opposite side from turning) - Eric Petroelje 12 years ago

5-in-1 Tool:

5-in-1 Tool http://ecx.images-amazon.com/images/I/31p1ZesJSlL._SL500_AA300_.jpg

Great for scraping, pealing, poking. I use it all the time (and it is stronger than a putty knife).

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So that's what that half round is for! I rather like mine, and I found it on the road so that was an even better deal ;) - Wayne Werner 12 years ago
Is the half round for cleaning off a paint roller? - dotjoe 12 years ago
That is what I have used the half round for... cleaning paint off a roller... but I bet there are other uses too! - Jeff Widmer 12 years ago

A dremel with various bits: cut-off wheel, stone, sandpaper, polisher, etc.

alt text

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+1 Love the dremel. When I first bought it I walked around the house LOOKING for projects to use it on. - JohnFx 12 years ago
I have two... well three Dremels. I got my first one when I was 16, and it's still going strong. One tip - buy the $13 Harbor Freight rotary accessory kits when they go on sale - it comes with more cutting wheels and they're almost as good as the Dremel ones. Plus it comes with a ton of other accessories. - Wayne Werner 12 years ago
What are some things you use it for? - Vebjorn Ljosa 12 years ago
After cutting something metal, such as carpet threshold trim, you can use it to deburr and polish up the edges. - spoulson 12 years ago
Does this overlap with the oscillating tool suggestion? Would a dremmel be better/worse? - myron-semack 12 years ago
Just heed the warning sticker about "...not for home dental use." Unfortunately, I have a friend who actually used one to buff a chipped tooth D-8 - Jay 12 years ago

Fire extingusher

http://a.imageshack.us/img291/47/firekz.jpg

I have something similar to this Kiddie Single-use from Home Depot because of its ABC rating:

Suitable for use on Class A (trash, wood, & paper), Class B (liquids & gases) and Class C fires (energized electrical equipment). The Full Home unit is fitted with a pressure gauge that provides at-a-glance status, is manufactured from lightwieght aluminum and a tough nylon valve assembly.

  • Mult-Purpose Dry Chemical
  • UL Listed / Rated 1-A, 10-B:C
  • Suitable for use on most common fires

Better to have it and not need it!

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A lot of insurance companies give discounts if you've got one of these in your home. - Doresoom 12 years ago

Complete socket wrench set for 1/4", 3/8", and 1/2" drives and box/closed end wrenches. Should include shallow and deep sockets. Places like Sears will carry an affordable portable fitted toolbox with all the sockets and wrenches.

alt text

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more for fixing cars then normal DIY - Walker 12 years ago
There are plenty of hex bolts around the house that need sockets and wrenches: Decks use lag bolts and carriage bolts. Some water and gas line fittings need box end wrenches (sometimes an adjustible wrench won't cut it). etc. - spoulson 12 years ago
Use case: Toilet base bolts diy.stackexchange.com/questions/279/… - spoulson 12 years ago
Image is overkill - a couple of adjustable ones have done all I need around the house so far... - MGOwen 12 years ago
Agree with @MGOwen, I think a socket set is important, but mine just has 8 or 10 standard sizes in each US and Metric and that's plenty for me. If I didn't own autos with metric bolts then the US set would be enough for around-the-house stuff. - cori 12 years ago
+1 on the need for shallow and deep sockets. Some things to look for in a socket set: Extensions for all of the ratchets (1/4, 3/8, 1/2). Also, I recommend getting 6 point sockets versus 12-point. I've stripped too many bolts with a 12-point socket! - myron-semack 12 years ago
Yes, 12 point sockets are typically for engine building and specialty. Emphasis is on obtaining 6 point sockets. - spoulson 12 years ago
Most important reason you need a good set of socket wrenches is for assembling and tightening all your power tools! ;-) - Bryce 10 years ago

Rubber mallet - good for things where a hammer will just dent things - also good for adjusting things with taps.

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I use mine far more than I use my hammer... - mwolfe02 11 years ago
@mwolfe02 See this answer, maybe you won't need the mallet so much. - Tester101 11 years ago
Usually called a "deadblow". - lecrank 11 years ago
The deadblow and rubber mallet are slightly different; they do mostly the same jobs, but a rubber mallet is solid rubber and can bounce back when you're really pounding on something. Hence the deadblow, filled loosely with lead shot and thus it has all the bounce of a sandbag. Because the deadblow has a hard shell, though, it can be more damaging to the surface being struck than a solid rubber mallet. - KeithS 9 years ago

I'm surprised no one has mentioned them but I think a good set of chisels are invaluable. Any time you're working with wood, a sharp set of chisels can be the key to getting a good fit and finish.

alt text http://www.homedepot.com/catalog/productImages/400/bb/bbd57c9f-731a-4157-a906-88f6437204b9_400.jpg

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a good set of chisels is worth its weight in gold. I use mine all the time - Wayne Werner 12 years ago

A Block Plane

Fits in a toolbelt or toolbox. Comes out every time something almost fits. Saves eight million trips back to the table saw. Handles simple rounding and shaping.

alt text

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how does one identify a good stud finder? I have two and neither are that great at finding studs. tapping on the walls is usually more effective. - mmccoo 12 years ago
Yeah, can someone recommend a specific model of stud find that performs well? I have tried a few and they are pretty in-exact. - myron-semack 12 years ago
i've bought about a dozen stud finders in my lifetime. in my experience, zircon stud finders are the most reliable, consistent and accurate. the big home improvement places usually carry 2-4 different kinds. make sure to buy one that has an LCD display to show you the strength of the reflected signal. - longneck 12 years ago
never had luck with the "tapping" method. I usually end up with 3-4 holes instead of 1. - dave thieben 12 years ago
I've had good luck finding studs with strong magnets which are attracted to the nails or screws in the stud. - jacobsee 11 years ago
xkcd.com/952 - Doresoom 11 years ago

Safety Glasses

alt text

Not really a "tool" per se, but one thing I ALWAYS and is stress ALWAYS make sure I have in my tool box and wear all the time.

Had a friend that got metal in his eye and had to have the metal drilled out, creeped me out so much that I now wear safety glasses anytime I do any kind of work around the house.

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It took a trip to the emergency room (brake cleaner blowback) to cure me of "I don't need no stinkin' sissy eyewear"-syndrome forever. I'm so very lucky I didn't blind myself, and I'm never taking chances. Also, hearing protection, gloves and appropriate shoes :) - BryanH 10 years ago

A small pancake compressor. You can easily borrow / rent the tools, but having the compressor for so many jobs comes in handy. Can also be used without a tool to blow stuff off, fill tires, etc.

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I have a cheap $40-60 Harbor Freight 3 gallon oil-free compressor. I think I've probably used that more than any other single tool I've purchased - I fill tires, exercise balls, drive my nail/staple guns, airbrush... it's quite excellent! - Wayne Werner 12 years ago

A Good Multi-tool

diy: what are tools every do-it-yourselfer must own?

My personal favourite tool was my Gerber - though I know some people also like/prefer Leathermans. This is one thing where going cheap is not worth it. Anything Gerber, -Leatherman, -SOG, or any other quality tool brand really shines when compared with a cheap $10 variety. Seriously - save up for a few months and buy a good one. You'll be very glad you did.

I used mine almost daily until I lost it :'(

I'm saving up for a new one :D

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Multitools are useful because once you're up the ladder/stuck in the crawlspace, there's always that one extra tool you didn't bring with you. Sure, the screwdriver might suck, but at least it's there. - Alex Feinman 12 years ago
That or a swiss army knife. I can't live without it anymore. - Toon Krijthe 12 years ago
I routinely cut down 1-3 inch thick trees/weeds with the mini-saw on my leatherman. - Yitzchak 10 years ago

A ratchet with a gator-grip head. That is, unless unlike myself, you really like digging through a toolbox full of sockets for every job and can't identify the sizes on sight.

BTW: I have no interest in the company that makes Gator-grip, I just didn't know the generic name for this type of tool (if there is one).

alt text http://img651.imageshack.us/img651/4903/gatorgripwrench.jpg

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For home improvement tasks, I wouldn't say that a ratchet is actually that important. It's definitely a must-have general DIY tool, but not a whole lot of things in the house are going to present an opportunity for use. - Adam Robinson 12 years ago
I use mine on almost every project for something or another. For Home improvement tasks I find it handy mostly as a meta tool (removing blades from my circular saw, for example). - JohnFx 12 years ago
That actually looks pretty spiffy--never seen that before - Michael Haren 12 years ago
+1 Good advice for a home DIYer, because it's so space-efficient. - Bill Karwin 12 years ago
I will warn though. That a regular driver socket properly sized is much better at getting tough bolts off. This one will work, but sometimes it doesn't get as much traction. It is darn handy though. - JohnFx 12 years ago
I'll echo @JohnFx and also mention that in my experience the Gator-grip can round or otherwise damage bolt heads. - Zeke 9 years ago

A hack saw.

alt text

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A Good Flashlight

Regular and Small versions are good to have - I'm constantly looking for one when trying to fix something.

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Not sure why this got downvoted - I think a good flashlight is indispensable. There are always nooks and crannies that are too dark to see into, screws that have been lost in the shadows, etc. - Rod Fitzsimmons Frey 12 years ago
A headlamp might be a good alternative so you can use both of your hands still. - Greg 12 years ago
Also a hanging lamp is useful, or a snake light that can wrap around, otherwise the headlamp is great advice - Steve T 12 years ago

A decent table saw

After getting a cordless drill and a power miter saw.

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alt text

I love Japanese saws. They cut on the pull stroke and leaves a very narrow kerf (the channel that it cuts). I find that it cuts through wood a lot easier. Cutting on the pull stroke means that the blade won't bend. For saws that cut on the push stroke (most western saws), the blade might bend as you push.

I have this all purpose one, Japanese Modern Ryoba Saw, at home. One side is for ripping (cutting to a certain width) the other is for cross cutting (cutting to a certain length)

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alt text

A straight edge is really important. I actually have a 48' long aluminum ruler/straight edge that has a significant depth. It's great for drawing long lines and I sometimes use it as a guide for a circular saw or router.

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My outlet tester; beats sticking a paperclip in the outlet to see if it's live...

alt text http://www.acmehowto.com/howto/homemaintenance/electrical/images/no/outlettester.jpg

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plus it tells you if you wired the darn thing correctly. Incidentally it's also a tool that every (performing) musician should own. Also I tend to carry mine in my backpack to check outlets @ hotels, etc. to make sure it's safe to plug my laptop in. - Wayne Werner 12 years ago
Oh.. yes... that that correct wiring thing you mention ;-) Thanks for the tip. I'm going to throw my spare one in my pack as well. I tend to work from coffee shops and it would really ruin my day if a poorly wired outlet blew my computer. - gnome 12 years ago

A collection of good-quality clamps of different sizes, including some that can be tightened with one hand.

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+1 - It's often like having an extra hand (or two, or three) - Eric Petroelje 12 years ago
You can never too many clamps!! - Craig Trader 12 years ago

Adjustable Spanner (Wrench)

diy: what are tools every do-it-yourselfer must own?

Can be used on a wide variety of nut sizes.

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Gloves. A good pair will save you several trips to the first aid kit.

diy: what are tools every do-it-yourselfer must own?

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Workbench with a Vice

This may not count as a "tool", but not having one can make DIY projects difficult. I don't have one, and trying to sharpen a mower blade on your kitchen table is sub-optimal. Then there was the metal bracket I needed to drill a hole into... holding it with my hand...

I've had my eye on this bench from Home Depot. I like the steel work surface. I will need to drill holes to bolt the vice to the top, though.

alt text http://www.homedepot.com/catalog/productImages/300/82/82549c7e-6099-4381-84be-7b72a7c3afd4_300.jpg

Update: Last weekend, I bought this bench along with a 6" vice. My dad and I assembled it as a weekend project. We drilled holes for the vice and secured it with 1/2" bolts. Overall I am pleased with it. It did require a drill for assembly, which was a little unexpected. Here are the photos. (Sorry for the poor lighting, a good workshop light is next on my list!)

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I'm actually working on building my own work bench. It's too darn hot outside, though - and since we're renting a small duplex that's the only place I have to work... - Wayne Werner 12 years ago
In our house, workbenches ARE a vice!!! - Craig Trader 12 years ago
If you don't have room for a whole workbench, you can still get a small vice that screws onto an existing table or desk. That's what I'm using right now, and while it's not as sturdy as a bench vise, it has helped me cut through some metal pieces and hold some other things securely. - geerlingguy 10 years ago

Cordless Impact Driver

alt text http://www.lcdpayless.com/images/ryobi/RyobiOnePlusImpactDriver1.jpg

The ultimate compliment to your cordless drill - it does everything my cordless drill sucked at doing!

  1. Drives in screws without mangling the fastener head (phillips head screws anyone?)
  2. Removes rusted/stuck items like you wouldn't believe (Read: no rounded out screws or rounded off nuts/bolts)
  3. Cordless Drill will not drive a 3" screw into a stud - Impact Driver doesn't break a sweat.
  4. Compared with cordless drill, much less torque transferred to your wrist makes it more comfortable to operate
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Is the impact driver a superset of a normal drill? Can it do everything a drill does? Or is it something you only use on special occasions? - myron-semack 12 years ago
I really wouldn't call it a superset of a drill - the force delivered by an impact driver is a downward strike (like hitting the fastener on top with a hammer) in addition to the high rotational torque. It's something I use to insert and remove screw-type fasteners with - which is quite a lot on projects I work on, so I wouldn't classify it as "special use" - I use it all the time. Drill holes with a drill - insert screw(s) with an impact driver. Your hand, wrist and arm will thank you - kkeilman 12 years ago
Is it OK for general purpose philips screw driving? Or is it only appropriate for "big/tough" screwing (e.g. into a stud)? - myron-semack 12 years ago
Most definitely OK for general purpose work. Just be careful when driving the screws back in - you can apply a lot of torque in a big hurry. - kkeilman 12 years ago
Can you dial back the toque like you can with an electric screwdriver? - myron-semack 12 years ago
Not on the one I own - you vary the torque by how far you squeeze the trigger on the tool. - kkeilman 12 years ago
Mine now gets way more use than its cordless drill brother - mac 10 years ago
@kkeilman - What you refer to with the downward impact stroke is a hammer drill, meant mainly for heavy drilling e.g. concrete. An impact driver adds rotational power with its impacts; it's the motorized version of you putting a box wrench on a bolt and hitting the other end with a mallet to loosen or tighten it. As far as use, I mainly use mine outside, for fencing, deckwork, swing sets, and other situations involving lag bolts and long wood screws. - KeithS 9 years ago

Lineman's Pliers

Lineman's pliers are a sort of heavy duty combination of wire-cutter and pliers. A pair of lineman's pliers accompanied by a pair of wire strippers is about all you need to do just about any home wiring project. I've also used it to pull out staples and nails, bend sheetmetal, cut open tubes of silicon, and even as a light-duty makeshift hammer when I didn't want to walk all the way back to the garage.

alt text

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The only gripe I have about mine is that you need room to work; I have Kobalt's middle-of-the-road 8-inch linesman's pliers, and they're rather bulky for average household electrical work. I prefer my needle-nose pliers, which have all the same features including the "nutcracker" behind the hinge, but the longer nose makes working inside a J-box easier. - KeithS 9 years ago

A hammer drill

Something you'll definitely want if you're doing any kind of drilling into masonry or stone. A bonus is that these can typically be used as just a regular drill by turning off the hammering action, so it's basically a 2-in-1 tool. Some even let you turn off the drilling action so you can use it like a small jackhammer.

alt text

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Installing a flat-screen TV over the fireplace, something like this is mandatory. :) - GalacticCowboy 12 years ago
I've used mine for things like installing a garden hose reel on a brick wall and drilling holes for cane bolts for my backyard gate. - gnovice 12 years ago

Head lamp

Much easier than having someone else hold a flashlight, or trying to balance the light against the tool box.

head lamp

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I used one of these when blowing in insulation for my attic. It would have been a lot trickier without it. I could hold on to a rafter with one hand and operate the blower hose with the other without having to worry about losing my balance and putting a foot through the new ceiling I had just installed. - Doresoom 11 years ago
If you're a baseball cap wearer, I recommend getting one that clips to the brim of your cap. - lecrank 11 years ago

You'll definitely need a torpedo level. I don't have a lot of storage space, so I just have one of these torpedo levels.alt text

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Duplicate post. Someone already mentioned levels. - Mike B 12 years ago
The laser level is not really the same thing...it creates a leveled line...great if you need a really long leveled line. A torpedo level is a lot better for checking the level quickly and easily of a surface. The laser level takes a lot of time to setup and calibrate. Sometimes you just need to quickly check if something is level. If you have the money, you can invest in both. - milesmeow 12 years ago

A portable workbench: I use my Workmate all the time:

alt text http://www.blackanddecker.com/ProductImages/PC_Graphics/PHOTOS/BDK/POWER_TOOLS/TOOLS/SMALL/4/WM425%25_5.gif

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And you can beat the heck out of it and it'll shrug it off. I have the model with the cloth pockets below, which is handy for catching all of the wood shavings, nails, screws, etc so they can go in the trash instead of on the garage floor. - BryanH 10 years ago

Watchmakers Screwdriver Set

It seems like more and more things around the home use those pesky little screws. Also don't forget all those kids toys, electronics, etc that like to use those same little pesky screws.

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I bought a set at Radio Shack about 15 years ago and they're still going strong. Only the tiniest flat head driver broke. Great for jewelry, computers, electronics, and tight spaces. Sometimes I use a needle noses pliers around the handle of one for extra leverage. - geerlingguy 10 years ago

Oscillating tool

Those cheapo harbor freight version of the Fein Multi-master et al. are nearly as good but much lighter on the pocketbook:

alt text http://www.harborfreight.com/media/catalog/product/cache/1/image/370x/9df78eab33525d08d6e5fb8d27136e95/i/m/image_5662.jpg

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I have the Dremel Multi-Max - far less expensive than the Fein, but has 85% of the capability at 1/3 the price (even cheaper if you buy a refurbished one). - kkeilman 12 years ago
Does this overlap with something like a Dremel? Or do they both do different things? - myron-semack 12 years ago
If you're referring to the Dremel rotary tool, yeah they do different things. But they sell the multi-max: dremeloscillatingtool.com that's something completely different. Youtube "oscillating tool" and you'll find all sorts of great info. - Wayne Werner 12 years ago
Ditto on the dremel multi-max. Great tool. - Mike B 12 years ago
Great suggestion. I'd like to add my 2 cents about quality: From my experience (particularly with tools) you get what you pay for. Sometimes buying something that costs twice as much will be cheaper because you only have to buy it once. - mattz 12 years ago
I got one of these (Craftsman) as a present. I've used it a few times for making small "plunge" cuts, particularly in tight spaces where a saw didn't fit. It cuts slowly, but it gets the job done! - myron-semack 11 years ago

A decent quarter-sheet, general purpose palm sander. Especially one with decent fastening capabilities.

Bosch 1297 http://www.plumbersurplus.com/images/prod/5/Bosch-1297DK-rw-80730-148351.jpg

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"Palm Sander" is pretty open-ended. Quarter sheet? Detail Sander? Random Orbital? Which one would you recommend for the average home owner, and why? - myron-semack 12 years ago
I currently own this Black and Decker 4-in-1 power sander, but I'm not happy with its performance. blackanddecker.com/ProductGuide/… Can anyone recommend a better one? - myron-semack 12 years ago
Good point. I am partial to the quarter-sheet and for the general purpose usage that I view it as a necessity for I don't need detail-level or random-orbit features. One could say, though that it's must-own *because it's general - you "must own" whichever one will get the most use in your workshop. with respect to your other question I am very happy with the one pictured above, but that doesn;t have all the features of the one you;re looking to replace.... - cori 12 years ago
The B&D one I have looked appealing because it can switch to the various modes, but it doesn't seem to remove material very evenly. (I tried to use it to sand/repaint my grill, and it took forever.) So, I've been looking at getting a quarter sheet sander as a secondary option. - myron-semack 12 years ago

Am surprised that no one has mentioned Duck Tape (Duct tape?) and 3 in 1 oil.... :)

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-1: This is two different items. - Phil Miller 12 years ago
Ducttape is not a tool. - Toon Krijthe 12 years ago

Aviation shears (tin snips)

diy: what are tools every do-it-yourselfer must own?

These are like giant wire cutters. They are designed to give you a massive amount of leverage from a squeeze of the hand. They're great for cutting anything that will fit in the jaws : wire, nails, sheet metal, conduit, doweling, and corner beads.

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Circuit Breaker Finder Tracer / Receptacle tester.

diy: what are tools every do-it-yourselfer must own?

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Good one. A tool that I don't have. My dad had something similar from his days as a cable guy and it was the only way to find the right coax wire at the junction box. - mmccoo 12 years ago
Newbie question... how does this tool differ from the "Non-Contact Voltage Tester" that was mentioned on the previous page? - Mike B 12 years ago
@Mike B: This tool is used to trace lines back to the breaker. The part that plugs into the receptacle also tests the receptacle and can tell you if it is wired properly. A non-contact voltage tester only tells you if the line is hot or not. - Tester101 12 years ago
@MikeB - An NCVT is a safety tool; it lets you know if the switch you're about to open up is still live because you turned off the wrong breaker. A breaker finder does exactly that; plug it into the piece you need to work on and scan the panel switches for the correct breaker to throw. - KeithS 9 years ago

A good knife.

Always in my pocket when working on something. (Knives like the one pictured seem impossible to find in hardware stores in the U.S. Where are they sold?)

knife

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You could probably find them online - but I wouldn't hold my breath for finding one elsewhere. - Wayne Werner 12 years ago
I'd say a Stanley knife. - Umber Ferrule 12 years ago
Why this particular style of knife over a regular utility knife? - myron-semack 12 years ago
@msemack, the long, strong blade is helpful when whittling a piece of wood (e.g., to make it fit around an unevenness in my old house) or when cutting something thick, like styrofoam or fiberglass. Also useful for stabbing building inspectors. - Vebjorn Ljosa 12 years ago
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I got a cheap one - wish it had the clamps like this! - GalacticCowboy 12 years ago
I've had good experiences with this thing. I don't do a lot of precise wood cutting, so I don't have much need for an expensive power miter saw (nor do I have the room). This thing is small and light, so it can go on a shelf when I'm not using it. You can also bolt it to your workbench for a permanent installation. - myron-semack 12 years ago
I have the older incarnation, where the back saw goes into a plastic piece to steady it, and that piece clamps to a post that has the angle adjustment. The box-jig design above is so much more elegant in its simplicity. - KeithS 9 years ago

(Medium to Heavy Duty) Extension Lead/Cord

Leads on corded power-tools aren't always long enough to reach from power-outlet to working area.

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Snake Light

alt text http://ecx.images-amazon.com/images/I/41n6iyi-55L._SL500_AA300_.jpg

Stop holding a flashlight in your mouth.

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A good solid 3-4 pound drilling hammer

...because regular hammers can chip when struck against hardened steel (i.e. chisels, star drills, hardened nails, etc.).

drilling hammer

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A Picquic.

diy: what are tools every do-it-yourselfer must own?

[I would have left this as a comment on the screwdriver-set answer, but I don't have sufficient rep.]

If you're in Canada, the one tool I'd recommend above any other is the standard Picquic combination screwdriver. Canadian Tire's page is probably the best example -- judging by the reviews, I'm not the only one who loves it. :)

I've used mine for years, on almost every job I've done around the house. In a pinch, the bits also fit well into a cordless drill. There are probably good equivalents in other countries, though I've not run across any myself.

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A slide gauge

diy: what are tools every do-it-yourselfer must own?

If you want to know what size bolt you're supposed to use, how deep a hole you need to drill or whenever precise measurement is needed.

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also called calipers. The cheap(est) kind mean you need to learn how to read a vernier scale, o'course (unless you're old enough to have learned on a slide rule ;) - Wayne Werner 12 years ago

A laser level (a cheap one will do just fine).

alt text http://img7.imageshack.us/img7/5220/straitlinelaserlevel150.jpg

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definitely not a must own. I've got one and I've never used it. - cori 12 years ago
I've used mine a handful of times. They're really handy if you want to keep multiple items in a straight line, especially over a long distance. I found it really handy to do the line of wall anchors for a whiteboard, for example. - myron-semack 12 years ago
One follow-up question: Sticking it against a wall. The one I have has a little thumb tack "base" that you stick in the wall. Are there any with better mounting options? - myron-semack 12 years ago

(A high quality) Combination Square

diy: what are tools every do-it-yourselfer must own?

Transferring measurements, marking out 90° & 45° angles, scribing parallel lines...

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Chalk Line

diy: what are tools every do-it-yourselfer must own?

Snapping, setting out straight lines.

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(Sharp) Pencils

You need something to layout, set-out, all those cool DIY projects you are going to do.

Don't forget a pencil sharper, if you can't get a good sharp point via a knife.

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Shrinking tube and hot glue - use them all the time.

The combination of shrinking tube and hot glue makes smooth, sealed and water-proof solids of any basic shape. Ideal to create custom-shaped plugs or jacks.

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Something I discovered about hot glue - if you drill holes in both surfaces prior to gluing the strength increase is tremendous. I haven't done any scientific tests, but you probably get at least 3-4x the holding power (shear and normal) - Wayne Werner 12 years ago
The combination of shrinking tube and hot glue makes smooth, sealed and water-proof solids of any basic shape. Ideal to create custom-shaped plugs or jacks. - Martin 12 years ago

Toolbucket. Love mine. It's amazing what all you can get into one of these.

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A good Do-it-yourself book.

Reader's Digest "New Complete Do-It-Yourself Manual"

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My favorite is the Home Depot 1-2-3 books; one for general repair, another for plumbing. - geerlingguy 10 years ago

Cordless 18v lithium ion impact driver. Drives screws and bolts so smoothly, quickly, and without torquing your wrist. Also relatively light, small, hangs on a belt, and battery lasts a long time.

Makita BTD144 is one good example.

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May want to merge your answer with kkeilman's. - myron-semack 12 years ago

(A good quality) Handsaw

Don't underestimate the usefulness of this old school hand-tool.

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Cordless (circular) trim saw. Fits into tighter quarters, better for making short cuts than the full-size circular saw.

alt text http://www.blackanddecker.com//ProductImages/PC_Graphics/PHOTOS/DEWALT/TOOLS/LARGE/3/DC390B_1NB.jpg

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I've wondered about power issues for the cordless versions. Anyone know about this? - Doresoom 12 years ago
A battery-driven saw with a smaller blade just won't have the torque and cutting power of a full-sized saw with a full-powered motor -- that's physics for you. That's why I have both saws. But the smaller one gets used 10 times more often than the larger saw... - Craig Trader 12 years ago
So much easier to slice up plywood sheets with a cordless circular saw. That said, the cordless one should be your second circular saw. - mwolfe02 11 years ago

Toolbox

You need somewhere to store, organise and keep safe all those essential DIY tools.

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Plumb-bob

Sure you can use a Spirit Level to check if something is plumb, but there are occasions when a Plumb-Bob just makes more sense...

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Nail Pincers & Nail Bars

diy: what are tools every do-it-yourselfer must own?

Makes pulling out nails a breeze.

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Palm Router

Cheap enough for most DIYers, you can pick up a good quality one for around $100.

Has enough power (normally about 1HP) for most DIY jobs.

Can be used to make a variety of DIY projects around the home that much easier.

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A Diamond Sharpening Stone

For honing and keeping those plane blades, wood chisels, knives, etc good n' sharp.

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Stud finder.

In case you need to hang something that requires more support than a drywall has.

alt text http://www.homedepot.com/catalog/productImages/300/41/418f6e5c-a1ec-451a-8fc1-b3047f2a7559_300.jpg

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Duplicate. Adam already beat you to this one. - Doresoom 12 years ago
maybe merge your answer into his? (You have a picture with yours, so you answer is a bit cooler.) - myron-semack 12 years ago

The Basic tools needed in your tool box to be a Do It Yourselfer!!

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