Curran Copeland wrote:

Plywood is not an issue here since I have had the same results with solid
wood, the ply makes a better sounding board then the solid wood, for less
cost.**Wood*in*sides*is*solid*3/4*stock*either*poplar*or*oak*with*the*grain
running horizintal.**Don't*know*how*to*float*the*the*the*e nd*panels*and*come
up with a solid box, that is one of the delimas I am having.**Maybe*making
the end boards of the box with a vertical grain would allow both to move in

Making the ends vertical would just move the stress to the end/side joints.

How about making the whole thing of plywood? Veneered if you want to get
fancy.

There must be a solution to your problem, there's a lot of tongue drums out
there :-).

--
It's turtles, all the way down