Welding guides
Parts, troubleshooting, equipment, and life in the trade. Browse by topic or search below.
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Millermatic 212 Erratic Wire Feed Causes: Drive Rolls, Liner, Tip, and Gun Checks
If a Millermatic 212 feeds wire erratically, surges, slips, birdnests, burns back into the tip, or starts a bead clean and then stutters, start with the wire path before blaming the control…
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Aluminum MIG Wire Feeding Problems: Birdnesting, Burnback, Shaving, and Drive Roll Setup
Aluminum MIG wire feeding problems usually start because aluminum wire is soft and does not push through a standard MIG gun like steel wire. Birdnesting, slipping drive rolls, shaved wire, burnback, and…
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MIG Gun Neck Overheating Causes: Contact Tip, Diffuser, Duty Cycle, and Cable Problems
A MIG gun neck overheats when heat cannot leave the front end fast enough or when electrical resistance builds at the contact tip, diffuser, neck, cable, or work return. The most common…
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Millermatic 255 Pulse MIG Setup Problems: Wire, Gas, Arc Length, and Gun Checks
Most Millermatic 255 pulse MIG setup problems come from a mismatch between the selected pulse program and the actual wire, gas, material, gun, or feed path. If the arc is harsh, ropey,…
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Millermatic 211 Poor Arc Stability: Troubleshooting Feed, Ground, Gas, and Consumables
Poor arc stability on a Millermatic 211 is usually not a board failure. Start with the parts that directly control the arc: contact tip, wire feed path, drive roll groove, gun liner,…
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Welding Helmet Sensor Troubleshooting: Auto-Darkening Lens Flicker, Flashing, and No-Darken Checks
If an auto-darkening welding helmet flashes, flickers, darkens late, stays light, or drops out while welding, stop welding and inspect the helmet before continuing. The most common sensor-related causes are blocked arc…
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Plasma Torch Nozzle Damage Causes: Orifice Wear, Double Arcing, Piercing, and Air Problems
If a plasma torch nozzle has an oval hole, nicked orifice, melted face, keyhole-shaped bore, spatter damage, or sudden cut-quality loss, stop and inspect the full consumable stack. Nozzle damage is usually…
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Hypertherm Poor Cut Quality Troubleshooting: Dross, Bevel, Wide Kerf, and Consumable Checks
If a Hypertherm plasma cutter starts leaving heavy dross, beveled edges, a wide kerf, rough cut faces, poor pierces, arc dropouts, or inconsistent starts, inspect the consumables and setup before blaming the…
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Plasma Consumable Wear Indicators: Electrode, Nozzle, Shield, Swirl Ring, and Retaining Cap Checks
If a plasma cutter starts leaving heavy dross, a wider kerf, angled cuts, poor starts, double arcing, arc dropouts, or inconsistent pierces, inspect the consumables before blaming the power source. Plasma consumable…
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Square Wave 205 TIG Cup Size Selection Guide: Standard Cup, Gas Lens, and Stickout Checks
For a Lincoln Square Wave 205 TIG setup, cup size controls how well argon shields the tungsten and weld puddle. Use a smaller cup when access is tight, amperage is low, and…