From: Anne Schaefer <anne-AT-tanglewoodmarionettes.com> Date: Fri, 28 Mar 2008 08:37:15 -0400 To: puptcrit-AT-puptcrit.org Subject: Re: [Puptcrit] Barth Mache: you gotta try it! > > I wonder if the contact cement will stiffen up with time? > I hope that "latex based" in this case is refering to an acrylic, > not the actual rubber latex, which is not a durable material for > Theater masks (reacts with sweat, melts and cracks too quickly). > The water-based contact cement that we use (DAP Weldwood) is a liquid neoprene compound, I believe. (It looks, smells, and acts a lot like the neoprene 501 casting compound we get from Chicago Latex). We use it quite a bit as a binder for fabric mache, as well as using it to paint a skin on cardboard, and both hard and soft foams. It takes paint well. We've had better results using the DAP than Sculpt-or- Coat for applications where it's used to coat things, especially when a little flexibility is desired. I think also that the DAP has better moisture-resistance than the Sculpt-or-Coat. Long-term, I'm not sure how it will hold up. It will probably have the life, break-down process of neoprene. Anecdote: At one point, I spilled some drops of neoprene casting compound on a cotton t-shirt I was wearing. The drops cured on the shirt, and I continued to wash/ wear the shirt for a couple of years. The neoprene splotches did not wash out, of course, and over time grew very dark brown in color. A few weeks ago, the splotches flaked off, leaving behind precise, splatter-shaped holes in the fabric. _______________________________________________ List address: puptcrit-AT-puptcrit.org Admin interface: http://lists.puptcrit.org/mailman/listinfo/puptcrit Archives: http://www.driftline.org
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