Things You'll Need
Instructions
Place a newspaper on a table. Place the plastic box on the newspaper. Spray the inside of the box with nonstick cooking spray.
Place the object that will be duplicated with the mold on the newspaper against a side of the box. Make a dot on the box 1 inch above the height of the object.
Pour 5 ounces of tap water into the measuring cup. Add 4 ounces of the alginate plastic solution to the cup. Stir the mixture inside the cup with a wooden stir stick for 20 seconds.
Pour the mixture from the cup into the plastic box. Push the object into the mixture until it is completely covered. Leave the box undisturbed for eight to nine hours.
Score around the top of the hardened mixture where the object was inserted with a utility knife. Continue to score around the top until you can pull a section of the hardened mixture off.
Grip the exposed end of the object with needle-nose pliers. Pull the object out of the hardened mixture.
Put on the protective gloves and respirator mask. Pour 3 ounces of the ̶0;A̶1; liquid plastic into the measuring cup. Add 3 ounces of the ̶0;B̶1; liquid plastic into the cup. Stir the mixture inside the cup with a wooden stir stick for three seconds.
Pour the mixed liquid plastic into the hole in the box until the level is even with the top. Let the liquid plastic set for four hours.
Upend the plastic box and shake the alginate out onto the newspaper. Break the alginate apart to reveal a plastic copy of the object you have made for your dollhouse.