Nice work. Seems you are branching out !
What resin will you use at the beginning ?
Might be a tight fit in a pressure pot. Looks like the material is 3/4" stock. That makes the mold 7" square, but the diagonal a poofteenth more than 9-7/8".
I'm operating from memory, but I think the inside diameter of a 2.5 gal PP is a little more than 9". I'll check mine tonight to verify.