I tend to use air only for carbide. It really doesn't like re-cutting chips, so coolant can be a liability. Air if aimed correctly evacuates chips immediately and I've had good results that way. Carbide doesn't care so much about heat, and I've found that getting the speed and feed right with air to clear the chips takes the heat out with the chips and the tool and work stay fairly cool anyway.
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Thanks, that’s really good to know. I’m going to have to look at the options for a mist cooler. So much to take in!
Any suggestions for UK tooling suppliers would be really appreciated, thank you. I’d rather buy once cry once.....or with tooling keep crying but not that often