ComposiMold

Concrete/Cement Casting with ComposiMold Mold Making Materials

Order your Concrete casting flexible mold making material here.

Making Concrete Castings Using ComposiMold





This bird and welcome sign was cast with concrete with red concrete coloring added.





The steps involved with making a concrete casting with ComposiMold are the following:

1. Prepare your original part. Apply a mold release and place it into a container that can hold the ComposiMold.

2. Melt the ComposiMold

3. Pour the ComposiMold over your original and let it solidify

4. Separate the original from the ComposiMold mold

5. Apply a mold release to the ComposiMold mold

6. Mix your concrete

7. Pour the concrete into your ComposiMold Mold

8. Try to wait patiently as it cures.

9. Separate your cast part from the ComposiMold mold and admire your work.

Apply Mold Release to your Model

Applying a mold release (or release agent) will allow your model to be easily separated from the ComposiMold. Applying a mold release to the mold before casting will also minimizes wear and tear on the mold. This is important if you are using the mold to make many reproductions.

Molds releases that work with concrete include:

• Spray Vegetable Oil (Pam)

• Mineral Oil

• Petroleum Jelly

• Motor Oil

• Spray Lubricants (WD40, ArmorAll)

Apply a light mist coating over the entire surface of the model and surrounding forms (any surface that will come in contact with the ComposiMold).

Wipe off the mold release after to make sure you do not have too much. You can also use a clean paint brush or cloth to brush the release agent over the surface of the model and surrounding forms. Make sure that intricate detail, undercuts and hard to reach areas are coated as thoroughly as possible.

NOTE: Do not soak your model with release agent. Over-applying release agent will result in tiny bubbles on the working surface of your finished mold (pin-holing) and will be reflected in your cast part taken from the mold. Wipe off all access material. Be sure to get the mold release in the crevices but do not use so much that it puddles up. For other casting resins other than plaster or concrete, use mold releases designed for that resin. For most materials, a wax or PVA mold release will work fine.

To Make Your Concrete/Cement Cast

Mix the concrete and pour into part.

For two part molds, a funnel may be needed. Gently vibrate the mold with your hand by tapping the sides of the mold to insure that all the cavities are filled and entrapped air can escape.

After the concrete has cured (It is best to wait a day), separate the mold gently and admire your part.