Stopped by a machine shop in Austin and saw something off about their coolant

I was visiting a buddy at his shop in Austin last weekend. He had this new coolant setup that everyone there was raving about, saying it was the best thing for their CNCs. But I noticed the parts coming off the mill had a weird residue, not the usual clean finish. I asked if they checked the concentration levels and they said they just eyeball it. Am I wrong for thinking a meter is better than guessing with coolant mix?

2 comments

2 Comments

fiona_murray9d ago

Honestly that's just asking for trouble, eyeballing coolant is never a good idea.

ivancoleman9d ago

I'd be willing to bet half the people who say they 'eyeball' it actually just check the color and hope for the best lol. Have you ever seen someone actually blow their engine from skipping the proper mix?