Hi all im trying to machine thin ally eg 1 - 2mm thick but my HSS end mills just keep getting black to hot i use coolant.
I think the problem is im using a wood router and even the slowest speed is to fast and tbh im scared on speeding the feed up instead or is this really the only way other than to purchase a Chinese spindle tho that's what I actually want just got no money for that .
Any advice would be great cheers all