Cutting galvanized flashing

[garylyb]

Has anyone cut galvanized roof flashing on the CNC? The metal is 30 gauge, .01 inches thick.

What bit and speed would it need? Any cooling required?

I haven't tried it, I think it would be too tough on the bit.

Thanks,

Gary

[Deleted]

Thin stock like that would work best with extra support by adhering something on the top or bottom or held in a sandwich on both sides. Perhaps 1/2" wood or MDF for one side or two 1/4" for top and bottom.