What you'll need:
> Powder coated glass. Preferably a few different pieces, especially if you're planning to run speed/power tests
> Laser etching machine
> A level
I made this at TechShop SF!
Step 1: Align and level your piece
> Align the piece in the laser and matched the work to the surface.
> Level the piece. depending on your surface, you may need to build a shim or jig to level your work and keep it in place.
> Run a test etch on paper, cardboard, plastic, or other sacrificial surface to make sure that your lined up properly. (make sure your test doesn't bleed through to your work.)