Thread: Cast Iron and cutting fluid

Originally Posted by SineVise

What type of coolant are you using? and what concentration?

This thread is 6 years old.

Originally Posted by DMF_TomB

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..maybe it is just me, if my boss says use cutting fluid I would say, yes sir, no problem sir, how much should I use Sir, Flood coolant ok Sir, and do it, of course I have been unemployed for 5 weeks and won't start my new job for another week. Still being without a job does give you more reason or concern with keeping a boss happy.

What you do at work vs. wondering/seeking advice as to WHY someone has a certain idea, are two different things.

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