Hi all!
Have recently made my fist aluminum first surface coated mirror which came out perfect but the sticking isnt perfect but quite all right and getting better but i havent really cleaned it in any way possible either which as a lot to do with it.
But then i wanted to test to coat with copper and it worked the very first time and got me a very nice copper mirror.
The interested part was when i accidentally chipped one edge (they are very small and thin glass plates im using) and the copper film loosened from the chipped piece but without breaking which suprised me. I was of course interested to se how hard it would hold on the glass since it was copper that i have heard doesnt stick so well without an underlayer. I took a tweezer and could actually with only a very small resistance peel of the coating that was extremely thin, would had be funny to measure it. I estimate it to be a tad thicker then gold foil but only just or so could it just have been that copper is harder then gold so it wouldnt move so much.
But my question is if copper doesnt stick any harder then this on glass without any underlayer so that you could peel it of if the surface would have been perfectly cleaned? In my case it wasnt extremely clean du to test phase but not to far from which absolutely could have affected it to some degree.
Regards Henry
