Latex Molds

Best / easiest way to make latex mould support ?

I am making garden ornaments outa sand / cement using latex moulds, what is the best and easiest way of making supports. I am finding sand is not strong enough. Also, I havent access to tools to make wooden frames etc.

Do you have the original the mold was made from? If so, put the rubber mold back on it, then build up a supporting "mother mold" over the rubber, using plaster of paris and strips of burlap. The mother mold will need to be multi-piece, and figuring out where the parting lines should go can be tricky. This is the traditional method of supporting a rubber mold, and the best way I know of. You can also make mother molds of fiberglass, expanding spray foam, etc, depending on size, but plaster is the easiest for a beginner without access to tools.

This is really just a hint to head you in the right direction--you need better information than I can give here. I usually spend 1-2 weeks teaching beginning sculpture students mold-making, and even then some of them have problems. Try to find a good book on the subject, or if there is a university or community college in your area with a sculpture program, see if the professor or one of the advanced students can give you some guidance.

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