re: Completing the Torsion Boxes

The glue up was not as stressful as the photo with the painter’s tape clamp might make it look. The glue up for each shelf was in two steps: (1) glue on the top/bottom, and (2) after the top/bottom were set, glue on the narrow front/side faces. For (2), the narrow face sat in a trough firmed by the beveled top/bottom edges. That trough further stabilized the pieces (along with the brad nubs).