Using PVA as a mask
I've been using PVA (Poly Vinyl Alcohol) as a release agent for mold making and it dawned on me that this stuff might make for a good spray on mask. PVA is a liquid that when dry, turns into a plastic film that nothing sticks to. It washes off with water and resists epoxy and other harsh chemicals. Seems like it might make a good, inexpensive and easy to use mask.
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