Introduction: How to Cast Hollow Parts in a Mold Using Wax, Clay, Epoxy and Cement
Learn the easiest method for duplicate your hollow parts!
Step 1: Remove the Master
First Remove the hollow master from the mold.
The center of the hollow piece was also molded and used.
Step 2: Thin and Slow Curing Casting Material
Clear Casting Plastic is used as an example of a thin slow curing casting material.
The steps include:
- Prepare the mold with mold release.
- Place toothpicks in the mold to hold the mold core exactly in the center of the mold making sure there are voids all around the core.
- Mix the Clear Casting Plastic 1 part A to 1 part B by weight or volume.
- Pour the Clear Casting Plastic and wait 24hrs for it to cure.
- Remove the part from the mold.
Step 3: Thin and Quick Curing Casting Material
Wax Is used as an example of a thin quick curing casting material.
The steps include:
- Chill the mold (preferably in a freezer).
- Melt the wax and wait for its temperature to fall below 170F.
- Pour the wax into the mold slushing it around covering the mold evenly.
- Wait for the wax to cool.
- Remove the part from the mold.
Step 4: Semi-solid Casting Material
Clay is used as an example of a semi-solid casting material.
The steps include:
- Prepare the mold with mold release.
- Push the clay into the mold.
- Remove the piece from the mold.
- Smooth out the imperfections.
- Wait for it to solidify and then fire the part in a kiln.
Step 5: Thick Casting Material
ComposiStone is used as an example of a thick casting material.
The steps include:
- Prepare the mold with mold release.
- Mix the ComposiStone 1 part water to 2.5 parts ComposiStone by volume.
- Pour the ComposiStone and brush it around with your hand getting all sides evenly.
- Wait 1 hour for it to solidify.
- Remove the part from the mold and let sit for 1 day before painting.