silly question but what thread is used on the tapped wires in tracker action. I'm currently doing a rebuild/ enlargement of an instrument and am struggling to find the correct thread. I've tried some modern M sized threads but they're much too fine.
any help would be appreciated.
regards
The thread isn't 'cut' it's 'rolled', therefore there is no machine-thread tap available to do this, it has to be done using a thread rolling machine.
If you take a vernier or micrometer to an existing wire end, note that the plain section is actually thinner than where the thread is thrown up: the action of rolling pushes out the metal to raise the thread - therefore a 16-guage wire (standard wire gauge) has a threaded part which is nearer to 15 or 14 gauge, dependent on the pressure which is exerted by the machine.
DW
many thanks
that's cleared that one up
more tooling required for the job in hand
regards
RW