Oh he is STILL at it? Wow, that’s 5 years? Or more? Gotta give him this: he’s persistent! I watched him at first, even if it’s infuriating at times, but eventually even I lost interest, and I build shit like that myself. No marble machine, but giant mechanical calculators, a pneumatic organ, boats etc But I think that’s what happens when musicians fabricate stuff. I know one who builds his dream guitar for 16 years. Next year he’ll be done. So he says. But then again, so he says for 15 years.