johnrpm wrote:Not much progress this weekend, I built a crude lapping machine using an old window wiper motor, I looked all over for some cast iron to make the lap with but had to settle for aluminium, the power supply is from an old PC, they can deliver plenty of amps and have 3.3v, 5v, 12v, the green enable wire needs to be tied to negative, I may make a holder for the crystal to oscillate it across the surface as its very boring by hand.
Hi John
I had to google lapping i didn't know what it was but thanks to Wikipedia i understand now
So you are trying to get those Crystals nice and flat ? sounds like it will take a while .
Yes i use the old pc power supplies all the time i have one with the plugs connectors on the case for a nice spare portable power supply ..
I don't know how flat the crystal needs to be or how thin ?