>From the retrogrouch site article on 753 tubing referenced above,,: "Because of the need to preserve the strength gained in heat treating, low-temperature silver brazing was the only acceptable way to join 753 tubing, and this required very close tolerances for mitering and lug fit when building. Also, the tubing could not be cold set after brazing, so alignment had to be spot-on from the beginning. Because of the special care needed to ensure a proper build, any framebuilder who wanted to use it had to be certified by Reynolds. The certification process involved getting a sample tubeset, then brazing a frame which had to be sent to Reynolds for destructive testing. The inspectors would look for close mitering tolerances, good brazing penetration, and any signs of overheating in the joint and tubing. Only when certified could a builder be supplied with 753 tubing"
Sounds like cold setting is NOT a good idea. John Hawrylak Woodstown NJ -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
