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Topic: Eeek... polyurethane disaster... Help?  (Read 515 times)
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Posts: 32
Joined: 29-Nov-2004

accident prone + crafty = fun

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« on: April 02, 2005 07:13:06 PM »

Here's the deal... I paint on rocks using acrylic paint, and normally seal them with acrylic sealant (aerosol stuff). Someone asked me if I could weatherproof a couple of my rocks for her... so I tried using polyurethane, but it isn't really working. After three hours it's still tacky and crumbles off the surface at the edges (taking the paint with it). Is this because it's intended for porous surfaces?

I only polyurethaned the backs of the rocks (anticipating something like this would happen). Sooo... should I  try and do the fronts carefully and hope there's no more crumbling? Can I use the acrylic sealant on the fronts and on top of the polyurethane? For some reason I imagine them reacting with each other and screwing me up further... would too many layers of sealant cause more crumbling? Any other suggestions?
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