My project involves a vertically grained carcass 8.5" square and 5" tall. The bottom half will be walnut. The top half may be soft maple.
The top half angles inward at about 45 degrees. All joinery will be mitered with floating stubs. One entire side hinges outward, similar to a mailbox.
Stock is 1/2" for the top portion and 5/8" for the bottom (to closer match the mitered face thicknesses on the 1/2" pieces).
My concern is expansion. Soft maple seems to have similar expansion properties, but any contrasting domestic stock would be OK. I live in Florida, but the piece will typically be inside.
Does anyone see a problem with bowing at the very bottom or joint stress in the transition from walnut to soft maple?
This is the base for a larger box.
I have a full SketchUp model (Version 8), if that would help.
Thank you for any suggestions.