Cost of mill hours and wear and tear on spindle and other componants.....cost of expensive diamond tooling....cost of the blank....you are now back up to the $80-$100 zone after all is said and done.
Good luck with all of that!
I will stay as far away from that material as possible. Just no profit in CNC of eMax. No matter what you do, no matter what mill you have.
Do you actually know of someone who has done this for over a year+ and claims it is profitable or a good idea?
I surely don't, and I have talked to almost every milling center in the US. Maybe you guys "down-under" have a secret weapon that I do not know about?