I use a set of shop-made right-angle clamping braces to ensure square assemblies. They came in handy for another use when I went to mount the heavy lid of a hope chest, as shown, which is always an awkward job. I installed the no-mortise hinges on the chest first, then clamped the braces to hold the lid flush with the top of the chest. This setup allowed me to move the lid in any direction for precise positioning without all the struggle.—Mack Cameron, Brooklin, Ont.You'll find free plans for right-angle clamping braces at