Welding for beginners: how to start the right way
Every welder started in the same place: not sure which machine to buy, a little nervous about the arc, and first beads that looked like a row of pebbles. This guide puts the path in order. First you pick the process that fits what you want to build, then you set up your safety gear, and only then do you step up to the bench with practice exercises in a sensible sequence. At the bottom of the page you will find every guide on the site, grouped by topic.
For auto body work and thin sheet metal, start with MIG: it is the easiest to learn. For gates, railings and thicker steel, especially outdoors, stick welding is cheap and tough. TIG comes later, when you want stainless, aluminum and fine finish work. Whatever you pick: a welding helmet with the right shade, cotton or leather clothing, and ventilation before the first arc.
The three processes you need to know
There are dozens of welding processes, but a beginner only needs three. They all work on the same principle: an electric arc between the electrode and the work melts the metal, and something shields the weld pool from the air. What changes is what shields it and how the filler metal gets in.
- Stick welding (SMAW): a metal rod wrapped in flux coating. The coating burns, makes the shielding gas and leaves a layer of slag over the bead. No gas cylinder, it tolerates wind and slightly dirty metal. The trade-off: you change rods every few inches and you have to chip slag. Full guides in the stick welding section.
- MIG (GMAW, also called MIG/MAG): a wire feeds continuously through the gun while gas from a cylinder protects the pool. You pull the trigger and travel. (MAG just means the gas is active, such as CO2 or an argon/CO2 mix; most people simply say MIG.) It is fast, clean and the best choice for thin sheet, but it needs still air. See the MIG welding guides.
- TIG (GTAW): the arc comes from a tungsten electrode that does not melt, shielded by argon, and you feed the filler rod with your other hand. It is the most precise and cleanest process, and also the hardest. Everything about it is in the TIG welding section.
How to choose a process for your project
There is no single “best” process, only the one that suits the job. This table sums up the choice for someone welding in a home shop or taking the first steps.
| Process | Best for | Difficulty | Relative investment |
|---|---|---|---|
| MIG | Auto body, thin sheet, fast production, beginners | Low to medium | Medium |
| Stick | Gates, railings, structures, thick steel, outdoor work | Medium | Low |
| TIG | Stainless, aluminum, fine work and a perfect finish | High | High |
Table 16.1 of the e-book The Welder's Forge.
If your goal is to restore a car, replace a floor pan or patch a rocker panel, the starting point is MIG with shielding gas and fine wire, .030 in (0.8 mm) or smaller. The auto body welding guides cover that in detail. If you want to work toward the trades, the sensible plan is to master stick welding on mild steel in every position first, then train for the welder qualification test required by the code or employer you are aiming at. Not sure which machine to buy? Read best welder for beginners first.
The cheapest MIG machines are set up for gasless flux-cored wire. It works and spares you the cylinder, but it gives more spatter and slag and does worse on very thin sheet. If you are serious about auto body work, choose a machine that accepts shielding gas.
Safety before the first arc
The arc gives off intense ultraviolet and infrared radiation, it makes fumes, and it runs on high current. None of that is a reason to be afraid, but all of it is a reason not to improvise. The minimum to get started:
- Welding helmet with the right shade (table below). An auto-darkening helmet makes learning much easier because you can see the joint before you strike the arc.
- Leather gloves for stick and MIG, thinner goatskin gloves for TIG. Never rubber or nylon: they melt and stick to skin.
- Cotton or leather clothing, long sleeves, no open pockets, plus leather boots. Synthetic fabric melts under spatter.
- Clear safety glasses (ANSI Z87.1) under the helmet, for grinding and chipping slag.
- Ventilation: garage door open, and your head out of the fume plume.
| Process | Current | Lens shade |
|---|---|---|
| Stick | 60–160 A | Shade 10–11 |
| Stick | 160–300 A | Shade 12–13 |
| MIG | 60–300 A | Shade 10–12 |
| TIG | 15–80 A | Shade 9–11 |
Table 2.1 of the e-book The Welder's Forge.
The full list, with how to choose each piece, is in the welding PPE guide.
Never weld galvanized parts without removing the zinc and ventilating hard: zinc fume makes you sick. Never weld a tank, drum or container that ever held fuel, even if it looks empty. Clear or cover flammables within 35 ft (11 m), keep an extinguisher close, and stay alert for at least 30 minutes after you stop (longer if your site rules or NFPA 51B call for it). Read the machine nameplate for input voltage and current before you plug in (typical shop circuits are 120 V or 240 V), and skip long, thin extension cords. If the breaker trips, call a licensed electrician rather than guessing.
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Your first practice welds, in order
The most common beginner mistake is jumping straight to the real project. Before that, you want a few pounds of scrap plate and a sequence that builds one skill at a time:
- Strike and hold the arc: on 3/16–1/4 in (4.8–6.4 mm) plate, just start the arc, hold it, and stop. With stick, practice the scratch start until the rod stops sticking.
- Straight beads on flat plate: run parallel lines without joining anything. The goal is constant width and height. This is where you learn travel speed and arc length.
- Butt joint: two plates edge to edge. Now the focus is fusing both edges evenly.
- T joint (fillet): one plate standing on another. It forces you to control the angle so the weld does not sit on one side only.
- Lap joint: one plate over the other, common in sheet metal and repairs.
- Change position: only after the flat position feels solid, move to horizontal and vertical.
After each bead, cut or bend the test piece and look inside. A weld that only “stuck” on top lets go at the first load: you need real fusion. For a step-by-step on stick, the process most people practice with, read how to stick weld.
Settings are a starting point
Every amperage or voltage chart, including the ones on this site, gives a starting value. The final setting depends on your machine, the consumable, the position and the real thickness. The method that works: start at the chart value, run a test bead on a scrap of the same material, listen to the arc, look at the spatter and the penetration, and adjust in small steps. Write down the setting that worked. In a few weeks you will have a chart of your own. When a welding procedure specification (WPS) or the filler-metal maker gives numbers, those win.
How to use the guides on this site
The guides are grouped into four topics, listed right below this text. A simple way to use them:
- No machine yet? Start with the auto body and garage topic, which covers machine choice and PPE.
- Have a machine and need settings? Go straight to the amperage and settings charts for your process.
- Bead coming out wrong? Look up the symptom: rod sticking, porosity, spatter, lack of penetration.
- Want it all in one place? The e-book The Welder's Forge puts processes, tables, safety and basic metallurgy into a single PDF you can open in the shop. You can also grab the free sample first. The guides and the e-book are study material, and they do not replace hands-on training.
Auto body and garage welding: sheet metal, floor pans and gates
Thin sheet, floor pans, tubing, gates, welder choice and PPE · Auto body and garage →
MIG welding: settings, gas, wire and fixes
Settings, gas, flux-core wire, contact tips and defects · MIG welding →
Stick welding guide: rods, amps and technique
Amperage, 6013 vs 7018, polarity, vertical and rod storage · Stick welding →
TIG welding: setup, tungsten, aluminum and stainless
Tungsten, argon, pedal, amperage, aluminum and stainless · TIG welding →
Frequently asked questions
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Want all of this in one PDF?
The e-book The Welder's Forge covers stick, MIG/MAG and TIG from the first arc to the shop floor, with reference tables and technical figures, in plain American English.
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