hellstudios

I've had very good luck producing a bright copper finish using citric acid in place of the vinegar. I had a few bags of anhydrous citric acid lying around and gave it a shot. The copper plating even mimics the original finish of the part with my solution. so a polished quarter = a polished copper quarter. I haven't had good luck with the vinegar solution. It seems to be too easy to produce burn spots and a weak, uneven coating of copper, whereas the citric acid coats the part evenly(even the backside).I tried the same with nickel plating. The solution turned green however I couldn't get it to plate at all. Your 100% vinegar and pinch of salt works wonders for nickel, but the citric acid works great for copper.

I've sent you an email. If we manage to find a fix I'll post it here.Thanks.

Hi. I grabbed your code and modified as needed, mostly just the key table along with the rows and columns numbers. However I get this error when trying to verify the code and haven't had much luck finding a solution. I'm using a teensy++ 2.0.narrowing conversion of '57346' from 'unsigned int' to 'int' inside { } [-Wnarrowing]It's not the only error, it seems to repeat for every entry in that table, i.e. KEY_A, KEY_B, KEY_C, etc.Any ideas?