Cutting clean 90-degree angles on square tubing is one of those foundational skills that separates sloppy fab work from tight, professional joints. If your cuts are off by even a couple of degrees, your fitup suffers, your welds have to bridge unnecessary gaps, and the finished piece looks rough. This video from GRAY STEEL walks through three different methods for marking and cutting accurate right angles on square tube stock, aimed squarely at beginners who may not have access to expensive cutting jigs or chop saws.

What makes this worth your time is the practical, shop-floor approach. Rather than assuming you have a perfectly calibrated bandsaw, the video focuses on layout tricks you can pull off with basic hand tools — the kind of knowledge that's invaluable when you're working in the field or in a small home shop. Getting your cuts right before you strike an arc is arguably more important than your welding technique itself, because no amount of filler metal can fix a bad fitup.

At 1,330 subscribers, GRAY STEEL is still a small channel, but they post daily with a clear focus on beginner-friendly fabrication tips. The production is simple and to the point — no filler, no long intros, just the technique demonstrated and explained. If you're just getting into welding and metalwork, dialing in your cutting and layout skills early will save you enormous frustration down the road.