You are reading a single comment by @slothy and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@slothy
I used to build competitive model airplanes a couple years ago. We mostly had positives milled from MDF (cheap), prepped those and then took the negative from them. Once worked with a mould directly milled out of some sort of PU (was probably Ureol or sth, not sure), was pretty nice to work with as well. Obviously, with MDF and lots of prepping, our moulds weren't 100% exact, but we're talking way sub-mm here. Could see if I can find some pictures (or old moulds) if interested.