23-05-17, 08:58 AM
Fantastic, thanks Unfazed. Would be a shame to have to weld it now I've done half the work.
I thought about filing away the entrance to the hole so the threads don't start on the case hardened part of the shaft.
Bretty - I've been doing some research and it seems standard taps are only designed for use in metals with a hardness of up to 45HRC, whereas I think this shaft is about 60HRC to a depth of 1.5mm if it's case hardened.
I thought about filing away the entrance to the hole so the threads don't start on the case hardened part of the shaft.
Bretty - I've been doing some research and it seems standard taps are only designed for use in metals with a hardness of up to 45HRC, whereas I think this shaft is about 60HRC to a depth of 1.5mm if it's case hardened.