How to Make Fake Rock Walls With Plaster of Paris

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Things You'll Need

  • Spray bottle

  • Liquid dish soap

  • Rock wall mold

  • Plaster of Paris

  • Measuring cup

  • Textured paint

  • Paintbrush

You can make an ordinary wall look like a rock wall.

If you are making a model for a school project or a train set, you can make the model look more appealing and beautiful by adding on walls that looks like real rocks. You can make a fake rock wall with a few materials that can be found at a craft supply store, such as plaster of Paris and textured paint. Once finished, you can place the rock walls into your model to make it look more realistic.

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Step 1

Fill a spray bottle with warm water and add in 1 teaspoon of liquid dish soap.

Step 2

Spray the inside of a rock wall mold using the soapy water.

Step 3

Pour 1 cup of powdered plaster of Paris into a measuring cup and add in 1 cup of warm water. Mix well with a spoon.

Step 4

Pour the plaster of Paris into the prepared mold and allow the plaster to set for about 1 hour.

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Step 5

Pop out the fake rock wall mold and place it onto a flat surface.

Step 6

Paint the wall using gray textured paint. Let the paint dry.

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