Eric wrote:

> Learned something new to me along the way..Hex dies are intended for
> re-threading or repairing threads, and round dies are intended for cutting
> virgin threads. Could be internet BS or shop mythology-who knows.


Sort of. But it is a safe way to go when buying sight unseen, and it can be
tough to tell when you are holding the die in hand. Round dies are almost
exclusively for cutting threads. Hex dies go both ways. Some of the suppliers I
use don't stock hex thread cutting at all, so a hex from them will be for
repair.



Rethreaders seem to be sold as thread cutting fairly often by less reputable
sources, including box stores, to the point that I have several times received
thread repair dies when purchasing what were supposed to be thread cutting dies.
Many people don't realize there is a difference.


There are several reputable lines of hex thread-cutting dies, but if buying a
hex die, you need to be sure that your supplier is reputable.


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