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Step 7Flip side up.
When the molding compound has fully cured, remove the sides and bottom of your box and flip the mold upside down.
Carefully remove the clay pellets from the underside of the mold and your figure.
Build new box sides around your mold, reaching 1 1/2" above the back of your figure. Make sure the edges are water tight.
Line the edges of the box with clay to create a tight seal with the mold and the box.
Coat the mold, and the back of the figure, with mold release or a thin coat of petroleum jelly. This will stop the second half of the mold sticking to the figure and the other half of the mold.
Roll up paper tubes and push them into your figure where you want your pouring holes (for the liquid clay later in the casting process) to be.
For Gromit I used 4 different holes to ensure that hands face and body all filled evenly and fully.
Mix up some more InstaMold and pour it over the figure (avoid displacing the paper cones).
Carefully remove the clay pellets from the underside of the mold and your figure.
Build new box sides around your mold, reaching 1 1/2" above the back of your figure. Make sure the edges are water tight.
Line the edges of the box with clay to create a tight seal with the mold and the box.
Coat the mold, and the back of the figure, with mold release or a thin coat of petroleum jelly. This will stop the second half of the mold sticking to the figure and the other half of the mold.
Roll up paper tubes and push them into your figure where you want your pouring holes (for the liquid clay later in the casting process) to be.
For Gromit I used 4 different holes to ensure that hands face and body all filled evenly and fully.
Mix up some more InstaMold and pour it over the figure (avoid displacing the paper cones).
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