Thanks guys, some good suggestions there.

FT welder, do you have the stubs that go on the BB, or are they the threaded stubs for the pedals? I need the BB part. I can make the pedal stubs, though it would be silly to do so normally, except I want to make some specialized pedals, due to the same orthopedic needs. That might normally sound complicated, but I have in mind a variation of the fly paper theme. Threaded stubs would still be useful, just in case my ambition flags. I could use 2 sets of the BB stubs if you have them.