{"id":4549,"date":"2024-12-05T02:28:26","date_gmt":"2024-12-05T02:28:26","guid":{"rendered":"https:\/\/glover.gen.nz\/wordpress\/?p=4549"},"modified":"2024-12-19T02:36:50","modified_gmt":"2024-12-19T02:36:50","slug":"vintage-singer-electric-conversion-to-singer-hand-crank-v3","status":"publish","type":"post","link":"https:\/\/glover.gen.nz\/wordpress\/vintage-singer-electric-conversion-to-singer-hand-crank-v3\/","title":{"rendered":"Vintage Singer electric sewing machine conversion to Singer (or reproduction) hand crank."},"content":{"rendered":"

Following on from this previous post<\/a> I have been doing some work on some 3D printed prototypes. The pictures below are of prototype 3, meant to be a proof of\u00a0 concept. As I made a bit of a booboo with the profile of the dish of the balance wheel, the adapter does not go far enough into the wheel, so it stands proud by a few millimetres. I also appeared to have messed up the grip of the boss. In the spirit of Rapid Iterative Development, I have a better profiled version almost ready to go, so after a good session of measuring and thinking, I will submit it for printing soon. I might wait for prototypes 2 and 2a to arrive from the UK to check out some other dimensions and parameters first.<\/p>\n

The material used is PLA, which is a hard, biodegradeable plastic. The parts are very light, and I thought they might be fragile, but they actually feel quite good<\/p>\n