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Setting Z at the beginning of print. I have read somewhere that setting Z in resin dish to start with clean piece of paper that keeps the dumb bell just shy of touching the coating in the resin dish, is this correct or is there a better way to get it started. I know there needs to be a clean scratch less surface for the light to get through to make good print, is this correct?

I loosen the knob holding the build platform so I can wiggle it as I Z down in .1mm steps and stop as I feel resistance to movement.

Thanks, Have dish coated with slyguard, guess I need to give it a whirl.