"Bob AZ" wrote in message
oups.com...
Is there a tool or cutter that has several teeth that I can use in my
lathe to clean up some metric threads in an aluminum hood for a camera
lens/shutter? The threads are about 67mm internal. The hood has been
dented and after straightening out the hood as much as possible I will
need to clean up the threads.

Thanks
Bob AZ


What I do in these circumstances is cut and file a piece of thickish copper
sheet into a single tooth chaser, which I drag along the thread at the
slowest possible back-gears speed. Internal threads are trickier, but
possible.

Works a treat.

--
Jeff R.