On 2014 Aug 2, at 4:11 PM, Mark G Thomas wrote: I recently did the entire keyboard for a Vector-Graphic Mindless Terminal with just common double-sided foam tape, aluminumised-mylar I just cut square pads and then further cut the corners off to make octogons. Close enough for the task, the octogons actually fit naturally into the keys. The foam tape I used was just the closed-cell stuff ~1/32" thick sold for mounting pictures and such, several layers to bring it up to thickness, ~1/8". It's a little bit stiffer than ideal, another approach could be open-cell weather-stripping foam tape with double- sided tape for the non-sticky side. In the keyboard I was working on, it wasn't just the foam that was a problem, the metalisation had mostly 'disappeared', see photo. First photo shows the new octogonal pads inserted in most of the keys, with two old pads still in place: http://www3.telus.net/~bhilpert/tmp/kbdRepair1-1200.jpg http://www3.telus.net/~bhilpert/tmp/kbdRepair2-1200.jpg