I have been using a Mastercraft 6-32 die to cut thread on a 1/8 welding rod
to use (a small section of) as a gnomon for a miniature sundial. No
problems. Today I had the bright idea to use a diamond drill bit with the
round head worn out and a 1/8" shank in a similar fashion.
Not only could I not make any impression on the drill bit with the die but
when subsequently I tried the same die on the usual welding rod, it would
not cut at all. To all intents and purposes the die is dead.
The obvious conclusion is that I killed it by trying to cut the drill shank
which is, presumably, hardened steel of some sort. However, I did not try
too hard and the die would not even start the thread on the welding rod
Is this just a case of misapplication of a tool, an inferior quality tool,
all of the above or am I missing something else? Are there dies which are
suitable for cutting HSS or carbon steel?
In practice, I can get around the problem easily enough using other methods
(I need not necessarily have to have a thread in that particular
application) but I am just curious.
14 years ago