I am back again looking for some personal insight into your profession. I work in R&D, welding and fabricating all kinds of ill shit. From time to time I have to put down the TIG torch and go machine something (Fusion and FS Wizard basically), so I am by no means a machinist but I can get the job done.

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I run a 3 axis knee mill with a protoTRAC SMX CNC controller. 3000 rpm max with compressed air blast but no coolant. So running dry and I was wondering if this was “acceptable” and if you had any tips tricks/suggestions?

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Enough about me, I am curious about end mill coatings. You all have been tremendously helpful with regards to tooling material. But as I dive into Google rabbit holes, end mill coatings are a whole other science unto themselves.

A Reddit for Machinists of all varieties. From Old School conventional guys, to CNC Programmers, to the up and coming next generation.