So I’m fussing with the bottom joinery on a chest of drawers while the wood acclimates in the garage. The base joinery is basically what Chris Becksvoort uses on some of his chest of drawers. The bottom panel connects to sides with a dovetail dado and is reinforced with glue blocks. See pics. Originally I planned to just use a cherry panel for the base, but started thinking maybe it would be wiser from a wear standpoint to use hard maple with say a 3/4 inch wide cherry face. The drawer side itself will be hard maple 8 3/4″ high. The maple panel for the base would be about ~20 inches wide. I calculated the difference in seasonal movement between the cherry side panel of the chest and the maple base panel to be about 1/8 of an inch front to back. That assumes a seasonal change in moisture content of the wood over any given year to be about 6% and using the movement factors for flat sawn from Lee Valley’s wood movement reference guide. Here’s the calcs.
Cherry: 20″ wide x 6% change in MC x .0025 = ~19/64″ seasonal movement
Hard Maple: 20″ wide x 6% change in MC x .0035 = ~27/64″ seasonal movement
Difference: 27/64″ – 19/64″ = 1/8″
I suppose I could glue only, say, the first six inches of the dovetail joint and use slotted screw holes on the glue blocks and not glue them or glue just one side, and finally cut the bottom or base panel width 1/8″ short in the back. Is that what you would do or is there a better way to deal with this?