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machining muscovite Mica??

machiningguru

Plastic
Joined
Apr 12, 2018
Hello, is anyone out there machining this material? I have been struggling with it for some time now. I am getting orders complete and good parts however it is killing my tooling. coolant is not an option.

The material is a laminated sheet .125", .25" .375: thick so downcutting tools are a must. Standard carbide endmills burn up quickly no matter the speed or feeds. I have tried several coatings with limited success.


thanks in advance for any help
 
I have no experience with that material. But if it's really abrasive, have you looked into a diamond coated endmill?
Garr sells some at some really reasonable prices (reasonable for diamond coated anyway)
 








 
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