In 2008, Adam Cowan and I collaborated on a small run of 10 Cubic 3x3x5 puzzles. They were designed by Adam, with masters machined by me in ABS, and then duplicated via spincasting and combined with “type A” cube4u DIY cubes.
Adam Cowan and I collaborated on a Star Puck puzzle in 2008. Adam conceived the puzzle and sent me a design ready for machining. I machined the parts from solid ABS billet, and then spincast copies in urethane using silicone molds.
Turning was only fair because of some unknown issue in machining, I believe.