Customizable Rock Climbing Hold 2Ed.

This program creates an array of rock-climbing holds to be 3D printed. The resulting holds are designed to be secured with a bolt and washer into a (presumably wood) rock-climbing wall. The size, shape, bore width, countersink width, countersink depth,, and difficulty are all customizable.
There are also 3 output modes:
Holds - ready to be printed with 100% infill
Molds - To be made out of a flexible material like silicone, and then filled with resin.
Tray - To be printed with low infill, roll-poured with silicone to make a mold, and then put resin in the silicone mold to make the holds.