Instructions for Making Artificial Hollow Rocks

Written by kelly sundstrom
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Instructions for Making Artificial Hollow Rocks
You can make your own hollow rocks for your rock garden. (Hemera Technologies/Photos.com/Getty Images)

When you are putting together an outdoor relaxation area in your garden, you can make the garden look more like a manicured garden by putting out large rocks. However, buying real rocks can be costly. One solution is to make artificial rocks using a few basic craft supplies that can be purchased inexpensively from a craft supply store. You can use these craft supplies to make faux rocks that are hollow and lightweight, yet realistic.

Skill level:
Moderately Easy

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Things you need

  • Small round balloon
  • Plaster gauze
  • Bowl
  • Paper mache pulp
  • Latex paint
  • Sponge

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Instructions

  1. 1

    Inflate a small round balloon and tie the end.

  2. 2

    Cut pieces of plaster gauze to measure six inches long and dip them into warm water. Drape the plaster gauze strips around the balloon to cover it with five to six layers. Allow the balloon to dry for two hours.

  3. 3

    Pop the balloon with a straight pin. Remove the deflated balloon through a hole where the end of the balloon as sticking out.

  4. 4

    Combine two cups of paper mache pulp and one cup of hot water in a bowl and allow it to sit for 20 minutes. The mixture should be thick.

  5. 5

    Cover the shell with the paper mache mixture then sculpt the paper mache into a rocklike form. Create dips, bumps and edges that are reminiscent of a real rock. Allow the rock to dry for two hours.

  6. 6

    Paint the hollow rock using grey and brown latex paint. Paint on the darker colours first, followed by thinner layers of medium and light paint. Use a sponge to apply the paint which will make the rock look more realistic. Allow the paint to dry for two hours before displaying the rock.

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