MPCNC Ability: What is the hardest material that can be reliably milled?

HEY everyone!

I have been looking at making one of these for a little while now, but have a quick question…

What sort of materials are able to be reliably milled. I have seen wood, acrylic and aluminium successfully done but how about Carbon fiber
or fibreglass, brass etc

Thanks in advance :slight_smile:

Those materials are pretty easy, CF just wears out bits a little faster than most and the dust is really bad for you, but no big deal to cut.

Ok thats great to know. Thank you VERY much for the fast reply!