Welders rely on three broad categories of tools: welding machines that generate the arc or heat, personal protective equipment that keeps them safe, and hand tools for measuring, clamping, and finishing metal. The specific lineup depends on the welding process and the job, but most welders build their kit from the same core set of equipment.
Welding Machines
The welding machine is the centerpiece of any setup. It supplies the electrical current that creates an arc hot enough to melt and fuse metal. Three machine types cover the vast majority of welding work.
A MIG welder (also called GMAW) feeds a spool of wire electrode through a handheld gun at a preset speed. The wire melts into the joint while shielding gas flows through the gun to protect the weld from contamination. MIG is popular in shops and fabrication because it’s relatively easy to learn and works quickly on steel, stainless steel, and aluminum.
A TIG welder (GTAW) uses a non-consumable tungsten electrode housed in a torch. You hold the torch in one hand and feed a separate filler rod into the joint with the other, while a foot pedal controls the amperage in real time. TIG produces extremely clean, precise welds and is the go-to process for thin materials, pipe work, and anything that needs to look polished. The tradeoff is speed: TIG is slower and demands more hand coordination than MIG.
A Stick welder (SMAW) is the simplest setup. It uses a consumable electrode coated in flux, which burns off during welding to shield the molten pool. Stick machines are portable, inexpensive, and work well outdoors and on dirty or rusty metal, making them a staple on construction sites and in field repair.
All three machines connect to the workpiece through a ground clamp that completes the electrical circuit. Without it, no arc forms.
Personal Protective Equipment
Welding produces intense ultraviolet and infrared radiation, flying sparks, molten metal spatter, and toxic fumes. Every welder needs a full set of PPE before striking an arc.
Welding Helmet
The helmet shields your face and eyes from radiation, sparks, and debris. There are three main lens types. A passive helmet has a fixed-shade dark glass lens that stays the same darkness at all times. A flip-up helmet combines a fixed dark lens with one that flips out of the way so you can see your work between welds. An auto-darkening helmet uses a liquid crystal display that instantly switches from a light viewing shade to a dark welding shade the moment it detects arc light. Auto-darkening models run on a battery, often with a solar backup, and let you adjust sensitivity so the lens reacts at the right threshold. For the clearest view, look for an optical clarity rating of 1/1/1/1, which is the highest available.
Safety glasses or goggles should be worn underneath the helmet as secondary eye protection, and anyone standing nearby should wear them too.
Gloves
Welding gloves are heat-resistant leather and should cover your hands, wrists, and lower forearms. The right glove depends on the process. TIG welding calls for a thin, tight-fitting glove (typically goat, deer, or sheepskin) that lets you handle the filler rod precisely. MIG and Stick welding throw off more spatter, so you need thicker insulated leather gloves with melt-through and cut resistance. Many have split-grain leather on the back of the hand to block sparks and softer grain leather on the palm for grip and comfort.
Jacket and Clothing
A flame-resistant welding jacket protects your torso and arms from sparks, hot slag, and arc radiation. Look for jackets with no exposed pockets (zippered or flap-covered pockets are safer), reinforced stitching, and a loose enough fit to cover your back when you bend. A metal zipper with a snap overlay keeps the front securely closed. Underneath, wear natural-fiber or FR-rated clothing, never synthetics that can melt to skin.
Boots
Welding boots should be rubber-soled, come above the ankle, and ideally have a steel plate above the sole. Tall boots let you tuck your pant legs over the top so sparks can’t fall inside.
Head and Respiratory Protection
A flame-resistant skull cap or balaclava hood protects exposed skin on your head and neck from sparks and UV exposure. For fume protection, a powered air-purifying respirator (PAPR) filters contaminated air and delivers clean air inside the helmet. Any respirator used for welding should carry a NIOSH certification mark.
Clamping and Workholding Tools
Metal has to be held firmly in position before and during welding. Even small shifts while the weld cools can throw off alignment or introduce stress into the joint. Welders use a range of clamps, magnets, and fixtures to lock parts exactly where they need them.
C-clamps are the most basic option, good for pressing two flat pieces together. Locking pliers (often called Vise-Grips) do the same job but lock with one hand and release with a lever, which is faster when you’re tacking parts in place. Welding magnets hold ferrous metal at preset angles, typically 45, 90, or 135 degrees, which is invaluable when you need to set up a corner joint without a second pair of hands. Angle and corner clamps perform a similar function but grip mechanically rather than magnetically, so they work on non-ferrous metals too.
For pipe and tube work, specialized pipe clamps wrap around the outside diameter to align two sections concentrically. Toggle clamps bolt to a welding table and lock down with a lever, making them useful for repetitive production work where you’re welding the same assembly over and over.
Measuring and Layout Tools
Accurate cuts and joint fit-up start with accurate marks. Welders rely on a handful of marking and measuring tools to lay out work before any cutting or welding begins.
Soapstone is the most common marking tool in a weld shop. It leaves a visible line on hot or dirty steel, survives the heat of cutting and grinding, and can be sharpened to a fine point for precision. One limitation: soapstone marks are nearly invisible on aluminum, so welders often switch to a paint marker for non-ferrous metals.
A metal scribe scratches a thin, permanent line directly into the surface. It’s more precise than soapstone but leaves a mark that can’t be wiped away, so it’s best used on areas that will be welded over or ground smooth.
Squares verify 90-degree angles and straight edges. A combination square is the most versatile because it can check both 90- and 45-degree angles and has a sliding rule for depth measurements. Speed squares (also called rafter squares) are quick for marking cut lines. A machinist square offers tighter tolerances when fit-up needs to be exact.
Calipers measure the inside and outside diameter of round stock, pipe, and holes. They come in vernier, dial, and digital versions. Digital calipers give the fastest reading and are accurate enough for most welding layout. A depth probe on the caliper can also measure the depth of a hole or groove.
A tape measure and a straight edge round out the layout kit for most jobs.
Metal Preparation and Finishing Tools
Clean metal welds better, and finished welds often need smoothing. Preparation and finishing account for a surprising share of a welder’s time, and the right tools make a big difference in weld quality.
The angle grinder is the workhorse. A 4.5-inch grinder handles most tasks: grinding down tack welds, beveling edges for joint preparation, removing old paint or rust, and smoothing finished welds. For heavy stock removal, 7- or 9-inch vertical grinders pull off material faster. Swap in different discs (grinding wheels, flap discs, cut-off wheels) and the same grinder covers cutting, grinding, and blending.
A die grinder is a smaller, more precise rotary tool used with carbide burrs or mounted points. It’s ideal for chamfering edges, deburring holes, or reaching into tight spots an angle grinder can’t access.
A wire brush, either handheld or as a wheel attachment for a grinder, cleans mill scale, rust, and weld spatter from the surface. It’s especially important when the metal will be painted after welding.
A chipping hammer is specific to Stick welding. Stick electrodes leave a layer of slag (hardened flux) over the weld bead, and the chipping hammer’s pointed and flat ends break it free so you can inspect the weld underneath.
For final surface finishing, belt sanders and orbital sanders with fine abrasive pads produce a smooth, uniform appearance suitable for paint or powder coating.
Cutting Tools
Welders frequently need to cut metal to size before joining it. An oxy-acetylene torch uses a fuel gas flame to preheat steel, then a jet of pure oxygen to burn through it. It handles thick plate easily and doesn’t require electricity, making it common on job sites. A plasma cutter pushes a high-velocity stream of ionized gas through a nozzle to melt and blow away metal. Plasma cuts faster than oxy-fuel on thinner material and works on stainless steel and aluminum, which oxy-fuel cannot cut.
For straight cuts on sheet and plate, a handheld cut-off wheel on an angle grinder or a bandsaw does the job. A reciprocating saw with a metal-cutting blade is useful for demolition and rough cuts in tight spaces.
Consumables and Accessories
Beyond the durable tools, welders go through a steady supply of consumables. Welding wire (for MIG), filler rods (for TIG), and electrodes (for Stick) are matched to the base metal and joint requirements. Shielding gas, typically argon, a mix of argon and CO2, or pure CO2, protects MIG and TIG welds from atmospheric contamination and is stored in pressurized cylinders with a regulator and flow meter attached.
Grinding discs, cut-off wheels, flap discs, and sanding pads wear down with use and need regular replacement. Contact tips and nozzles on a MIG gun are wear items too, since spatter gradually clogs them. Anti-spatter spray or gel applied to the nozzle and surrounding metal reduces cleanup. A tip cleaner or nozzle reamer keeps the gas flowing properly between replacements.