tips for welding a angle iron cube
I'll usually use vice grips or c-clamps, a "square" piece of steel and a square to make sure i've got 90* angles when I tack something up. The magnets work too, just double check everything with a true square. What type of joints are you using? Are you going to notch out the angle, or cut the ends at 45*, or just overlapping them? If you're notching or butting up 45* angles you'll want to make sure you leave a gap(about the width of your rod, maybe a little less) at the weld joint for penetration. Make sure you clean the joints too.
probably going to try to do it tomorrow if i have time.


