Caught a tip on coolant ratios from a retired machinist at a diner

I was grabbing breakfast last Tuesday and this old-timer at the next table overheard me talking about a tool change. He said most guys run their coolant too rich at 10 percent and that 7 percent with a biocide additive cuts down on rust and slime way better. I switched my Haas VF-2 over to that mix and my parts are coming out cleaner after a week - has anyone else experimented with lower coolant ratios?

3 comments

3 Comments

the_oscar16d ago

Heard a similar thing from a guy at a trade show last year.

sarah53116d ago

Oh really? @the_oscar did they give you any specifics on what actually changed between then and now?

grant_foster7916d ago

Yeah, I've been through that exact loop before. My advice? Track every single time they say something changes and follow up with a calendar reminder. If they don't put it in writing, it didn't really change.