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Step 5Demolding
As we're using gelatin, you need to be careful de-molding. Slowly separate the positive - poke it with a sharp if necessary to start the separation. If all goes well, it should pull right out with minimal problems.
Should your mold tear beyond recognition -- see the last step.
Something I have not tried yet... Gelatin will freeze (at a cost). So if you're having a lot of problems, you could theoretically freeze everything -- then try again. Removing your positive from a solid structure is much easier.
The cost: Gelatin looses a significant amount of structure when thawed. It maintains shape (for the most part), but looses a lot of structural integrity (as much as gelatin could ever have). My advice for those that freeze their molds -- pour your cast in the frozen mold. This is a better alternative over Ice as it seems that gelatin does not expand as much as water does when frozen (strange, I know) - this makes removing the positive much easier.
Should your mold tear beyond recognition -- see the last step.
Something I have not tried yet... Gelatin will freeze (at a cost). So if you're having a lot of problems, you could theoretically freeze everything -- then try again. Removing your positive from a solid structure is much easier.
The cost: Gelatin looses a significant amount of structure when thawed. It maintains shape (for the most part), but looses a lot of structural integrity (as much as gelatin could ever have). My advice for those that freeze their molds -- pour your cast in the frozen mold. This is a better alternative over Ice as it seems that gelatin does not expand as much as water does when frozen (strange, I know) - this makes removing the positive much easier.
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