[sdiy] keyboard contacts

[fmg]

Hi All,

Thanks for the suggestions.

BTW, with a metal sheet folding machine I cut and partially mold the
contacts. This machine was a big help and saved me a lot of time. I
made +100 switches this morning and used a few for some test.

Here how they look:

http://www.geocities.com/eqys/var_tmp/k_contactos.jpg
(no camera at the moment, all images scanned)

This is an improvised "stress test machine":
http://www.geocities.com/eqys/var_tmp/k_estres.jpg
(a similar one I left running at work this morning, but the
contacts there have gold-plated pins at ends)

The travel is 9mm, 6 cycles per second (approx):
http://www.geocities.com/eqys/var_tmp/k_estres2.jpg
(1/2 million notes a day)

In another test the switches are in a closed glass flask pending
a few milimeters of water with ferric chloride:
(can't put this in the scanner)

Now I'll wait for 2 or 3 days and then see what happened with them.
(hope the "stress machine" let me sleep tonight)
 
Fabio Gonzalez