I obtained a free piece of slate, about 2.75' x 4.5' x 1" thick from my local pool table dealer (the slates come in matched sets of 3, precision ground to .001, and sometimes one breaks leaving the other two as garbage). I had the idea of using it has a cheap optical table for some random laser experiments I do. I would like to fasten a piece of magnetic stainless steel to the slate so I can use the cheap magnetic bases like you get at MSC with my optical fixtures.
What thickness of stainless steel plate should I use and how should I fastenen it to the slate? I was toying with the idea of using liquid nails or something and a boatload of concrete bags on top of the plate as the glue sets, but perhaps using screws would be better? I had the impression that if I used screws at say every 6 inches square I would get localized warpage in the steel plate.
Suggestions?
Thanks,
Rick