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Forums - Modelling / Construction |
The construction forum is for the discussion of techniques on the construction phase of AFV modelling and the tools and materials used. |
| Topics | 1893 |
| Messages | 8728 |
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| Subject: | Re: RTV-NV Silikon-Kautschuk - experience? |  |
| Date: | Jul 1, 2005 |
| From: | frank forster | |
nemanja,
i have used such a stuff once and was not satisfied. once hardened it was too hard to make single piece molds and the mold breaks easyly.the viscosity ist wrong. modelling silicone must be almost liquid, like sauce to form the details.
you need silicone for dental use or goldsmith use, with a shore hardness from 18 to 22. then you coul make single piece molds. two piece molds are only needed for very complex master models.
a vacuum chamber or pressure chamber is very useful to make bubblefree molds and casts (both vacuum and pressure chambers are expensive) otherwise you will have about 30 to 50 % casting failure.
cheers
frank |
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