"Gypsum plaster sealer?" Topic
7 Posts
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| Hyun of WeeToySoldiers | 07 Jan 2006 8:20 p.m. PST |
Is there a sealer that would effectively seal/protect gypsum plaster? I've got some HirstArts pieces cast in Excalibur dental plaster that I'd like to seal. I've tried Future, and the plaster just seems to absorb/soak it… |
| vendel1 | 07 Jan 2006 8:52 p.m. PST |
Unibond sealer,dilute,give two coats,supplied by any DIY store, explain to 'whoever' what you need to achieve. Pasterers use this method on porous surfaces and metal. Derek |
| vendel1 | 07 Jan 2006 8:53 p.m. PST |
Even plasterers use it. D |
| The Gonk | 07 Jan 2006 8:57 p.m. PST |
Check the Hirst Arts forum, there are lots of tips there. I just cast some of the Sci-Fi walls by dipping the PoP "masters" in future floor polish, letting them dry on a towel, and then sanding the bottom flush with 400 grit sandpaper. |
GildasFacit  | 08 Jan 2006 5:59 a.m. PST |
Unibond is expensive, just use diluted PVA, much cheaper. Adding a few drops of surface tension breaker to the dilute PVA helps it soak into the surface better too. Tony H |
| Andrew May1 | 08 Jan 2006 6:35 a.m. PST |
Gildas beat me to it! Watered down PVA is fine and cheap for this purpose. |
| KatieL | 08 Jan 2006 9:45 a.m. PST |
I bought a jar of sealant from the local hobbystore. Looks sort like watery varnish, milky in colour. Paints on. |
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