Copper requires >2x the bonding fore and >2x the cutting force when compared to Al
Special hard coated is essential for cutting Cu.
Cold-strain-hardening occurs during the cutting process, caused by the relatively pronounced wedge shape of the cutter. The difference here can be seem 2nd bond (left) vs the 1st Bond (right)
Our hard coated cutters for copper are generally rated at over 200K cuts.
The clean 2nd bond cutting achieved with our coated cutters.