Boring for barrels
If you've ever used those hidden barrel-style hinges on a box, you've probably ruined a box or two trying to get the mounting holes between the box and the lid perfectly aligned. I solved this problem by boring the holes for the hinges before I glue the box top on, as shown below. Then, when I cut off the lid from the box, the holes can’t help but line up.
—Gerry Hill, Tucson, Ariz.