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Contact Information:
Junior Engineering
Utah State University
3735 Old Main Hill
Logan, Ut. 84322-3735
Phone:(435)797-8000      
Fax:
(435)797-8005
Email:jreweb@cc.usu.edu


Making a Mold
 
Fossils, Casts, and Molds

mold, measuring cup, plastic knife, and plaster Mixing the plaster and pouring it into the mold.
  1. Materials needed:
    • 2 cup measuring container
    • Pink mold
    • Knife
    • Plaster of Paris (5 1/2 cups)
  1. Add 2 cups of water, close bag and mix with hands until smooth, immediately pour into the mold.
Plaster drying in the mold Using the plastic knife carefully remove the dried plaster from the mold
  1. Fill to the top of the mold, but do not overfill. Gently tap the mold to remove air bubbles. After 20 minutes or when the plaster has partially set, use the plastic knife to etch in name and date.
  1. After 30 minutes, separate the sides of the mold from the plaster. Carefully remove the cast starting at the "heel" of the plaster foot.

 

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Junior Engineering. All rights reserved.