On Fri, 4 Sep 2020 at 15:43, Gene Heskett <ghesk...@shentel.net> wrote: > > I have, you have to press hard enough to pierce the oxide coat. Thats is > not much, but its not at all hard to take a bare wire and lay on the alu > plate without getting a connection.
Before I posted the message I had done the test. I used a piece of aluminium that I machined several years ago (a euro-cylinder re-keying shoe) I did not have to press hard, and certainly not hard enough to damage the surface. If aluminium oxide was as perfect an insulator as you believe, then anodising would not work, it would stop immediately. Unless your Aluminum is a whole different material to our Aluminium. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
