You are reading a single comment by @deleted 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.
deleted
Assuming the frame is brazed using brass, your silver solder has a much lower melting point, so I wouldn't worry too much about damaging the fillets.
It wouldn't hurt to order a second disk mount or just a price of steel plate and practice soldering it to something other than a bicycle frame. Just to get an idea of the type of heat you need to focus into the mount rather than the thin tube.