18 Sep
2013
18 Sep
'13
12:37 p.m.
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, as others suggested ($1 for 24" x
2")
Maudlin PL10-0075 .0075 x 10 x 20 plastic shim stock for the back (about $10 with
shipping)
Michaels metalized mylar sheets for the pads (a couple bucks for several square feet)
I wonder where you can get those materials (or equivalents) over here...
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)
Right. I had been thinking about how to cut the disks cleanly. FOram is a
notoriously hard material to cut neatly, of course.
So far, I've identified the following systems that
need pad replacements
Apple Lisa
Corvus Concept
Terak
Genrad Futuredata
SOL-20
Other machines that use them include Apricots, PERQ 2s (all verions),
some Tektronix, some Compaqs (I think),Whitechapel MG1s, etc, etc, etc
-tony