Let’s face it: Gluing mitered frames is a hassle. You need four, five or even six hands—or the time-honored shop staple, masking tape. I like the good, strong blue kind. You’ll need one piece for each corner. Lay the masking tape face up and place the joint’s pieces tip to tip on the tape. Spread a thin, even coat of glue on both faces of the joint. Fold together the pieces for each joint using the tape as a hinge. For small frames, the tape alone can be enough to hold the joint while the glue dries. On large frames, the tape securely holds the parts in place while you apply clamps.