Every reference I can find calls them ACME LH thread (some saws are RH thread).Is that a square or ACME left hand thread?
Every reference I can find calls them ACME LH thread (some saws are RH thread).
Hmm, perhaps? Could it just be that it is a high TPI on a larger shaft? The OD could also be worn.It looks way too shallow to be an ACME. A square thread could be that shallow and still engage.
Does this saw tilt to the left or right? That will tell you if it’s left thread or regular.
cheers
martin