This thread is 6 years old.
Originally Posted by SineVise
What you do at work vs. wondering/seeking advice as to WHY someone has a certain idea, are two different things.
Originally Posted by DMF_TomB
Rececntly I tapped a 10-32 hole in cast iron dry. The HS tap galled and damaged the thread crest on the tap. With another new tap and brushed on thread cutting oil, no more problems