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What doesn’t happen is weld a bunch of tubes together and then “heat treat” the resulting frame!
The joints of 6061 alloy frames need heat-treating after welding.
Emyr-
Are Ali frames heat treated after building? I didn’t know that - guess I assumed it was the same as steel in that regard, individual tubes are heat treated in different ways by the tube manufacturer, but the built frame itself is not then heat treated.
I still don’t really get the difference between adding a disk mount to a tube just after frames been built and now (except of course all the extra stripping and painting work). The same rules apply and the same standards are needed in the workmanship.
cookiemonster
I’d be looking for a refund too, but I don’t think your original question is a concern.
Tubes come ready heat treated and are then assembled into a bike frame. There are no issues welding the “already heat treated” tubes together, so there’s no issue welding something onto a tube that’s now part of a frame.
What doesn’t happen is weld a bunch of tubes together and then “heat treat” the resulting frame!
Apologies if I’ve completely missed the point here....