[universaltest]

Thanks for clearing that up. I was going to ask how this differs from the form 1 which, at first glance, seemed like the same concept.

Is the oxygen permeability what keeps the printed object from adhering to the membrane?

[ObviousScience]

The oxygen inhibits the curing, so it only begins to cure ~20um above the membrane, which means that it never sticks, since it never touches the window, and that can just continually pull it upwards.