Make a block of wood the size you want, then cast fiberglass over it.
Remove block of wood.

Pete Stanaitis

Jack wrote:

Hi I was wondering if anyone had any ideas about where to find a
approx. 10" h x 5" w x 4" deep solid cube (no lines) so I can make a
mold of it and cast resins or whatever into it ??

The only thing I could find are some trophy cubes (that are hollow);
these are a pain to try and seal..

Thanks!

jack