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Do you prime/paint models before making molds for casting? Answered

I'm working on a model sculpt that I plan to cast in resin later. It's almost finished, so I'm wondering if it's okay to prime the model before using it to make a silicone mold? Or would it be best to leave it naked, so to speak? I'll be using Smooth-On products (MoldMax 300 resin and MoldStar 15 Silicone) if it helps.

Thanks! 

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rickharris
rickharris

5 years ago

What is the model made from.

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Ayedeas
Ayedeas

Answer 5 years ago

Super Sculpey polymer clay

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rickharris
rickharris

Answer 5 years ago

It has a smooth surface so I wouldn't expect any need to prime.

You may have to experiment a bit. I have cast rings using silicone casting material from patterns made in Fimo a similar Uk product without any priming.