17 Sep
2013
17 Sep
'13
8:13 p.m.
On Tue, Sep 17, 2013 at 8:06 PM, Al Kossow <aek at bitsavers.org> wrote:
I had to fix some Lisa keyboards, and here is what I
finally came up with
after a week or two of experimenting that produces perfect pads.
Woodland Scenics 5mm HO track bed for the foam...
Maudlin PL10-0075 .0075 x 10 x 20 plastic shim stock...
Michaels metalized mylar sheets...
Get a
Disc Cutter with 7 Punch 1/4" to 5/8" from ebay ($28)
http://www.ebay.com/itm/390617394797 for example
This is critial (see below)
I would be tempted to use a laser cutter to make the circles. I think
you could even laminate all the materials in advance and buzz out
discs of whatever size you needed. I know we cut mirrored acrylic
all the time, so thin aluminized mylar shouldn't be a problem.
I would be willing to give it a try if you wanted to send me a few
square inches of raw material.
-ethan