Ever gouged up your hand while plowing through sheet metal with a pair of snips? Or been dissatisfied with an uneven, crinkled edge? Next time, try readers James Nelson’s sacrificial plywood sandwich technique. You’ll bid farewell to wavy edges and undeleted expletives, and cut a dead-straight line every time. Here’s how:
Clamp the metal between pieces of 1/2-in. or 3/4-in. scrap plywood and clamp on a straightedge to guide a circular saw. Now just saw through the sandwich using a carbide blade. This tip is for cutting thin sheet metal only, not thicker plate steel. P.S. This sandwich technique also produces great results when you’re drilling holes through sheet metal.