It was silver conductive ink that I got at Fry's. It was cheaper to buy it there than it was to mail order it! On Sep 7, 2013, at 5:18 PM, Bill Pierce wrote: > Thanks for the tutorial. I have 2 Coco 3 keyboards and 1 Coco 2 that need the very same thing. > Exactly what was the conductive ink you used and where did you buy it?