Knowledge Hub

Buyer's Guides & Shop Know-How

Technical guides written for the job site, not the showroom - how to choose the gear, how to run it, and how to fix it when the cut goes wrong.

Coiled steel MIG liner and PTFE MIG liner for aluminum wire, each with a brass end fitting Maintenance & TroubleshootingMIG Consumables

How to Replace a MIG Liner: Steel vs PTFE, Measuring and Trimming, Step by Step

Steel or PTFE, how to measure and trim a MIG liner, and how to replace it step by step, with the signs...

Nov 4, 2026 MIG wire tangled in a birdnest at the drive rolls, and a burnback with the wire fused to the contact tip Maintenance & TroubleshootingMIG Consumables

MIG Welder Birdnesting and Burnback: Causes and Fixes for Drive Rolls, Liners and Tips

Why MIG wire tangles at the drive rolls or welds itself to the contact tip, how to tell which part is causing...

Nov 4, 2026 MIG welding wire sizes .023, .030, .035 and .045 in. drawn to scale with their exact diameters in millimetres Buying GuideMIG Consumables

MIG Wire Size Chart: .023 vs .030 vs .035 vs .045 by Metal Thickness and Amperage

Choose .023, .030, .035 or .045 MIG wire by the current you weld at and the thickness of your steel, with charts...

Nov 4, 2026 MIG gun front-end parts in assembly order: gas diffuser, nozzle insulator, contact tip and nozzle Buying GuideMaintenance & Troubleshooting

MIG Contact Tip and Nozzle Compatibility Guide: Threaded vs Non-Threaded

Contact tips, gas diffusers, insulators and nozzles only work as a matched set. Learn threaded vs non-threaded tips, thread-on vs slip-on nozzles,...

Oct 29, 2026

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