Question: Two months ago, I laminated a U-shaped curve from approximately 40 strips of 1/16-in.-thick African mahogany using yellow glue. The finished piece has a 16-in. radius and 16-in. legs, and is 2-1/2 in. square in cross section. The problem is that the curve has tightened so that the ends of the legs are now more than 2 in. closer together. The lamination shows no sign of slippage. What happened?
-- Mark Laub , Minneapolis , MN
Answer: The problem was caused by two related factors......