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Where can I buy plaster?

Community Answer

At any Home Depot or Lowes store, or on an online retailer.

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What can I pour into molds?

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Plaster of Paris for modeling molds or concrete if you want the model to be heavy.

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What if I need to mold a hollow object?

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Just make a regular mold, and coat the walls with the molding product. Don't fill the mold, but spread it equally against the inner surface and wait for it to dry.

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How do I pour the casting material in to make a replica?

Community Answer

If it's clay, then do the same as you would do for play dough and put in a bit of clay that fits the mold perfectly.

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How do you make a mold from a sketch idea?

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Try to reproduce a real model with a malleable material, like clay, which would be a replica of the sketch. Then, follow the tutorial to make a mold from it.

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What do I use for concrete casting release?

Community Answer

I've had good results with painting the mold surface with used motor oil just before pouring the concrete. Just don't use too much, a light even coat works fine.

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What can I do if I don't have the object and I want to make a mold from an idea in my head?

Community Answer

You must use your artistic vision to sculpt the object in clay, preferably one that will harden. You can then make the mold from that.

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How do I make a mold with clay?

Community Answer

Get the clay, then make it not too thick and not too watery. For example, if you want to mold a cup, use a real cup, then cover it with clay. When it dries, remove it.

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Question

Could I make a mold with slime?

Community Answer

Slime is not likely to conform to the shape of a mold, but you could try.

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What is the best material for a one part mold for glass?

Community Answer

Try using a cast iron plated box for molding glass. It's what makes the cooling process a lot easier and slicker for popping out your molds.

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If I wanted to use an existing resin art piece and make a mold to reproduce it, what type of mold would work the best? Should I use silicone, latex, or rubber?

Community Answer

Silicone is the easiest way, using 2 part silicone is the safest way to go and you’re guaranteed to end up with the result you want.

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