Cutting copper, lubriion question
WEBgamebird (Pete) December 29, 2022, 11:52am 2. Copper is verry "sticky" when being cut. It tends to plug the endmill if not lubried. WD40 works well, but it will make a mess of your spoil board. 1 Like. AndyP (Badger) December 29, 2022, 5:32pm 3. I have cut silver, aluminium and brass. from my limited experience Brass cuts nicely, then ...