Drywall tools tend to be specialized items that are used only for that one activity: drywalling. Tools like a jab saw, sander, and sanding screens don't have much use elsewhere around the home. Fortunately, these are basic tools, so you can put together a full complement of drywall tools without breaking the bank. Plus, a few of these drywall tools are ones that you may already own, like a utility knife.
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Drywall T-Square
A drywall T-square is unlike other types of straight edges or squares that you can buy, in that it has a full 48-inch length which allows you to cut the entire width of a sheet of drywall.
Not only that, but the head (the cross-end) of the square fits neatly over the edge of the drywall and is long enough that you can be assured that the square is perfectly in place. The T-square is by far your largest investment in DIY drywalling, but there is no acceptable substitute. Plus, the drywall T-square can be used for things other than drywalling.
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Drywall Knives
Drywall knives are specialized, so other types of putty knives that you may have in your shop will not work. The good thing is that drywall knives are not expensive.
The 6-inch knife and the 4-inch knife are used for slopping the mud into place and for taping. The 12-inch knife is used for feathering and final coats. You will need either the 4- or 6-inch (they are fairly interchangeable) and the 12-inch knife.
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Utility Knife
If you already own a utility knife, it should work for your drywall project. The only type of utility knife that would not be suitable is the type that has the snap-off blades. You want to make sure that your utility knife has interchangeable blades that set into a screw-down handle for greater stability.
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Cordless Drill
Professional drywall installers use screw guns that automatically load up a new screw whenever they are ready for the next one. For any major drywall installation project, you may want to rent such a screw gun.
For all other types of drywall work, an ordinary, off-the-shelf 12V or 18V cordless drill will work. The 12V cordless will drive a few screws, but the 18V drill can easily draw screws into wood studs hundreds of times over.
It is also helpful to have a clutch on the cordless drill so that the bit will stop turning at a certain point, rather than stripping the screw head. Corded drills will cause you frustration if trying to use them for drywall projects for two reasons: the cord and the difficulty of controlling torque on the drill.
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Sanding Screens
Drywall sanding sheets come in two types, both of which you will need: coarse fiberglass mesh with open holes, and sheets that look just like ordinary sandpaper. The fiberglass mesh allows the drywall dust to pass through so that you do not cake up the sanding surface. The sandpaper type of sheet is necessary for finer sanding. It takes much longer for the drywall dust to cake on this fine surface, and it is possible to clean it with a whisk broom occasionally.
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Sander and Sanding Pole
Mesh sanding sheets fit on the end of the sander and clamp down with wing nuts. Then, the sander and a sanding pole screw together. Regular broom handles have the same threads and will work as a sanding pole, saving you from having to buy a specialized sanding pole.
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Drywall Sanding Sponges
A sanding sponge looks like one of those kitchen scrubbers for pots and pans. It has a very abrasive surface on one side and a smoother surface on the other side. Another type of sanding sponge is, literally, a sponge. It has no coarse surface. It is a large sponge that is specific for dry-walling purposes and is used for wet sanding.
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Drywall Screws
The drywall fastener of choice today is the drywall screw. Drywall screws come in either coarse-thread or fine-thread varieties. Coarse-thread screws draw effortlessly into the wood and are so useful that you will find yourself using them for other home improvement projects.
The 1 5/8-inch screw tends to be the most practical length for all drywall projects, though 1 1/4-inch screws are most commonly used with 1/2-inch drywall. Fine thread screws are used for metal framing, whereas coarse threads are used for wood studs.
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Jab Saw
A jab saw is a hand saw with a six-inch blade (depending on the model), sharpened tip, and coarse teeth. It works almost like a knife with teeth, a very tough and sturdy form of a serrated kitchen knife. The tip is sharp enough to penetrate drywall, but not so sharp that it will cut your finger when you apply light pressure.
The jabbing function is the main feature of the jab saw. When you don't have an edge to start your cut, you must place the sharpened end of the saw perpendicular to the cutting surface and smack the handle with the heel of your free hand. A strike with a hammer or rubber mallet will also do.
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Electric Multi-tool
An electric multi-tool is the complement to the jab saw. Jab saws are best for short straight cuts and almost any rounded cut, such as squares for electrical boxes and circles for recessed lights.
An electric multi-tool's saw feature allows you to make long straight cuts, squares, and rectangles for electrical boxes, and just about anything else that is too cumbersome to do with the jab saw.