Plywood Box Assembly Aid for Your Projects
Get a hand from an electrical box when building a plywood box.
Quick Third Hand
I was assembling some plywood storage boxes and needed a third hand to hold the parts square while I screwed them together. I found an old 4-in. electrical box in the garage and decided to give it a try. The box was sturdy and perfectly square, and the clamps fit nicely inside to hold the assembly tight while I drilled pilot holes and drove screws. — Steve Rodgers