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How do I carve sprigs and stamps?

Modifying Molds

Get More Shapes by Modifying Molds
You can modify the profile of a plaster mold after it has been made, and before it is dry. Say you want a rounded bottom hump mold, but only have mixing bowls with flat bottoms. Pour the plaster into the mixing bowl, and when it is has set but is still rather wet, put it on your pottery wheel (flat side down). Center, and trim the bottom into a round shape with a trimming tool.

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