Q&A for How to Make Plaster of Paris

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How do I make mod roc?

T. Chinsen

Top Answerer

Wet strips of muslin and soak them in a container of liquid plaster of Paris. Allow the plaster to soak into the fabric before using. You can also use gauze for a lighter layer of mod roc.

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I have a vintage plaster cat. The tail and part of the front legs have broken off. Can plaster of paris be moulded to the forms needed and subsequently be attached to the tail and legs?

FiRE

Community Answer

Yes, if you have the kind of mould. Do you have a piece of the broken legs and the tail? if you do, then you could either “glue” them back on with plaster or fill them as a mould.

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Will Mod Podge work as a glue substitute for making plaster of Paris?

Snakey006550

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No, Mod Podge is not suitable as a glue substitute for making plaster of Paris. Plaster of Paris sets through a chemical reaction with water and does not require glue. To strengthen or modify plaster, you can mix it with materials like white glue (PVA glue), which integrates better with the plaster mixture. Mod Podge, being a sealer and finish, won't work effectively in this context.

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How can I make a mold of an old cement steppingstone without damaging it?

Snakey006550

Top Answerer

To ensure the plaster releases cleanly from your old cement steppingstone, clean the surface thoroughly to remove dirt. Apply a release agent like petroleum jelly, cooking spray, or a commercial mold release evenly over the surface, especially on textured areas. If the cement is porous, seal it with a thin layer of varnish, shellac, or Mod Podge before applying the release agent to prevent the plaster from seeping in. Once the plaster sets, gently remove the mold to avoid damage to the stone or the mold.

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