@gearsawe = genius. I'll give it a go tomorrow. I'm printing a mold of the TreeFrog
(no need for the offset as the feet will be where I pour the metal). I'll rotate the created mold so the feet face up for printing (to reduce bridging) in ABS with 100% infill for the box and then acetone the mold away. I'll let you know how it goes and post some pics.