How to Make a plaster ocarina mold, instructions on how to make a ceramic 10 finger hole sweet potato ocarina... Ocarinas - clay whistle flutes, sweet potato. Ceramic musical instruments.

Ocarinas by K. Dunster

Making a Simple
Plaster Ocarina Mold

Page Seven




Sealing the Wall

Secure the overlapping edges of the vinyl with the duct tape (tool #9). The inside edge needs to be sealed completely from top to bottom to prevent wet plaster seeping between the layers.

(Click on pictures for a larger view)


inside tape

Attach tape to cover entire edge of the vinyl.

The outside overlap only needs to be held in place; no moisture-proofing necessary.

outside tape

Attaching Wall to Floor

Center the taped wall around the clay model.

Press coils of moist clay (about as big around as your index finger) to seal the gap where the "wall" meets the "floor." While doing this, the wall can be shaped into an oval, as it is being held in place by the clay.
clay seal outside

Seal the outside first.

Now press coils of clay to the inside of the joint. This "double seal" insures that there will be no plaster leaks.

With the second plastic trash bag, cover the entire mold assembly until the plaster is ready to pour.
clay seal inside


Next: Mix and Pour Plaster , Finishing >>


Ocarina Mold-Tools 1 | Making the Clay Model 2 3 | Mold Box Floor 4 5 | Mold Box Walls 6 7 | Mixing, Pouring, and Finishing 8 | Make an Ocarina with a Plaster Mold | Clay Ocarina Mold | Make an Ocarina using a Clay Mold | Make an Ocarina Without a Mold | Glaze a Ceramic Ocarina | Glaze a Dragon Ocarina


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