Where woodworking tools stop
A woodworker’s kit overlaps with metalworking in places: tape measures, squares, clamps, drills and sanders all carry over. But metal is harder, tends to heat up when cut, produces sharp chips, and cannot be glued or nailed the way wood can. Projects therefore often call for a few extra tools. Buy them as a project needs them, not all in advance, because most of these are used only for specific jobs.
Holding the work
Metal does not give or compress like wood, so a clamp has to grip hard and not slip. Several kinds are common:
- C-clamps and F-clamps with steel frames hold flat bar and plate to a bench.
- Locking pliers apply a strong, adjustable grip and are handy for odd shapes.
- Vises. A bench vise with steel jaws is probably the most-used metalworking tool. Soft jaw covers made of aluminum, brass or fiber protect finished surfaces from marks.
- Welding magnets hold pieces at set angles, such as 45, 90 and 135 degrees, so they can be tacked in place.
- Machinist’s parallels and V-blocks hold round stock and sit work level for drilling.
Where a clamp touches a welded joint, it can be damaged by spatter or heat, so keep clamp screws and surfaces clear of the weld area. Good clamping systems are also a way to make work repeatable.
Layout and measuring beyond a tape
Metal projects usually want more accuracy than carpentry. A steel rule, a combination square with a hardened blade and calipers (digital, dial or vernier) cover most needs. A scribe leaves a fine line on metal, while a center punch marks where holes begin so a drill will not wander. Layout fluid, a dye that makes scribed lines easy to see, helps on bare metal. Measurements on metal also change with temperature, so let hot pieces cool before checking them.
Taps and dies
Taps cut internal threads in a drilled hole, and dies cut external threads on a rod. Together they let you make bolts and nuts or put a thread into a plate where a bolt can screw in.
Using a tap well depends on drilling the right size hole first, because the hole for threads is smaller than the bolt it will take. For example, a metric 6 mm coarse thread has a pitch of 1 mm, and the tap drill is commonly 6 minus 1, or 5 mm. Rely on a tap drill chart rather than memory for other sizes. Matching threads depends on understanding thread pitch, and it is easy to confuse metric and inch sizes, so keep track of whether a tap is metric versus SAE before you start.
Practical points:
- Use cutting oil or tapping fluid, especially in steel.
- Turn a half turn forward, then back a quarter turn to break the chip, and keep the tap straight.
- Taps are hard and brittle. A broken tap is very difficult to remove, so avoid forcing it.
- Blind holes (those that do not go through) need a bottoming tap for threads close to the bottom, and room for chips.
- Start with softer metals such as aluminum or brass for practice, though aluminum can gall and stick.
Cutting tools for metal
Most woodworking blades are the wrong choice for steel, and using them can be unsafe. Instead consider:
- Hacksaws and junior hacksaws, with blade teeth chosen for the thickness of the metal.
- Aviation snips for thin sheet, available in left, right and straight cut versions.
- Metal-cutting bandsaws or cold saws, which cut bar and tube quickly and with less sparking than abrasive wheels.
- Cutoff wheels on an angle grinder, fast but with plenty of sparks, noise and dust.
- Files, deburring tools and a bench grinder for shaping and cleaning edges, with the usual caution around a grinder’s wheel guards and tool rests.
- Step drill bits and hole saws designed for metal make clean holes in sheet and thin plate, and good bits for steel are made of cobalt alloy or have coatings.
Each of these has a different noise, dust and spark profile, so wear eye protection and suitable gear, and keep flammable items well away.
Joining equipment
- Rivet tools and bolts need only a drill and the right bit.
- Soldering and brazing use heat from a torch or iron; soldering is low temperature and common for sheet metal, electronics and plumbing, while brazing uses higher heat for stronger joints.
- Welding melts the metal itself to fuse it. The main home types include stick (arc), MIG and TIG welding. MIG is often considered friendlier to beginners, while TIG gives finer control but needs more practice, and stick is useful for thicker material and outdoor work. Each requires its own equipment, gas or consumables, and a suitable power supply.
- Plasma cutters use an electric arc and compressed gas to cut conductive metal, and they need a clean, dry air supply.
- Oxy-fuel torches use compressed gases for cutting and brazing and involve gas cylinder handling that calls for proper training.
These are tools where taking a class, reading the manual closely and getting advice from a qualified person is a good idea, rather than learning purely by trial.
Safety equipment that comes with these tools
Specialized tools often require specialized protection. Welding calls for a welding helmet with the correct shade filter, flame-resistant clothing, welding gloves and boots, and good ventilation, as fumes from welding and from coated or galvanized metal should not be breathed. Keep a fire extinguisher nearby and clear the area of anything flammable, since sparks can travel and smolder. Hot metal looks the same as cold metal, so mark it or handle it with tongs. For grinding and cutting, wear safety glasses and a face shield, hearing protection, and a respirator or dust mask suitable for the dust. Keep work gloves on for handling sharp stock but never near rotating machines.
Before changing a blade, wheel or bit, unplug the tool or remove the battery. Compressed gas cylinders must be secured upright and handled according to their instructions. Follow the manual for every tool, and when a job involves structural strength, such as a trailer hitch or a load-bearing frame, consider having a qualified professional do or check the work.
Building up gradually
A sensible order for most home shops is: strong clamps and a vise first, then measuring and marking tools, then a drill with metal-rated bits, then taps and dies, and only then cutting and welding equipment as projects demand. That way each purchase has a project waiting for it, and your skills grow along with the tool collection.