Keytronics foam pads revisited

Steven Hirsch snhirsch at
Wed Dec 17 21:30:42 CST 2014

I've fixed a couple of keyboards using hobby shop track bed foam, but have 
not been very happy with the "feel".  That foam is considerably less 
resilient than the material Keytronics used.  After trying a number of 
alternate materials, I have found something that is almost identical to 
the original.  Take a look at eBay #171549720453 for an example.

It's 5mm thick with an adhesive backing, sold for shoe inserts.  I stuck 
0.075" plastic sheet to the backing, then turned it over and used spray 
adhesive for the aluminized mylar.  Worked like a charm.  Just finished 
resurrecting a N* Advantage and the typing feel is (in my opinion) far 
better than the last unit I did with track-bed foam (Corvus Concept).



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