11 Set stuff

[Mike K]

The male half , somebody skilled with a oxy torch could braze on the 90 degree bit , the ring would be slid on before the brazing .

I am pretty sure the pair of niphans I salvaged for the speaker system are made from brass . Yes would be a interesting project for a lathe . The most difficult part to make would be the internal threads on the lock rings , being so short and a coarse thread .