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Casting help needed |
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Lead-Space
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Post subject: Casting help needed  Posted: Sun Feb 02, 2014 12:29 pm |
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| Brood Brother |
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Joined: Sun Sep 16, 2012 5:56 pm
Posts: 1115
Location: Finland
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Hi,
I am about to cast some home made bases but I have question. The bases are made of plaster, plastic, wood, sand, greenstuff. I will use smooth-on products oomoo 30 and smooth-cast 300. My question is that is priming the bases enough to seal them since some materials are pourous? Or is sealing agent needed? I have uper seal and ease release if needed. Any tips?
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Dave
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Post subject: Re: Casting help needed Posted: Sun Feb 02, 2014 1:50 pm |
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| Hybrid |
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Joined: Sat Feb 17, 2007 11:25 pm
Posts: 9483
Location: Worcester, MA
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I wouldn't prime it, as the point of primer is to make paint adhere. I think you'd be better spraying things with a gloss coat, and once dry with a coat of silicone mold release.
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Athmospheric
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Post subject: Re: Casting help needed Posted: Sun Feb 02, 2014 3:01 pm |
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| Brood Brother |
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Joined: Tue Apr 20, 2010 10:08 pm
Posts: 961
Location: Nice, south of France
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I use a pva/water mix to seal polystyrene. It also works quite well to harden basing works.
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Blindhorizon
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Post subject: Re: Casting help needed Posted: Sun Feb 02, 2014 9:08 pm |
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| Brood Brother |
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Joined: Sat Jun 18, 2011 10:17 am
Posts: 1632
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The ease release won't help you with making the mold. I would recommend sealing stuff with watered down PvA glue hut even still some pieces may get stuck in the silicone and stay in it once separated. Keep your first cleanest mold as your new master if this happens.
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Lead-Space
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Post subject: Re: Casting help needed Posted: Mon Feb 03, 2014 6:07 am |
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| Brood Brother |
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Joined: Sun Sep 16, 2012 5:56 pm
Posts: 1115
Location: Finland
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Thanks guys, I will use PVA watered down.
_________________
Shapeways store: https://www.shapeways.com/shops/tinywares
Blogging about 6-15mm wargaming: http://www.lead-space.net
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