Don’t let the hard metal jaws of a pipe clamp ding up your board edges when you glue your next masterpiece together. Buy a pack of adhesive-backed magnetic business cards ($6 for 25 at office supply stores) and stick them on scraps of 1/4-in. plywood. When you’re gluing, attach the magnetized blocks on the jaws to protect your workpieces. Thanks to reader Sam Gant for this soft touch of a tip.