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In this example, the entire case mold was printed as one unit. The membranes defining mold mating points are printed in place inside the outer shell and the model is suspended in place by them. The membranes have holes to enable inserting natch pairs. The shell is then simply filled with plaster and the PLA filament peeled away to reveal the two ready-to-use mold halves.
This 3D printed shell encloses an entire two-piece mold for v 5.0 of our Medalta Potteries ball pitcher mold project - all that is needed is to fill it with plaster and peel off the PLA casing after it sets. We are still in the development stages so the fact that this will only produce one mold is fine. The membrane across the center is where the two mold halves mate (it also holds the inner model in place). The membrane has holes where natch-socket pairs can be mated for embedding into the plaster mold. The spare (shown lower right) will be rotated 90 degrees, it has a slot that fits snuggly over the membrane to hold it in place. We designed this to print a minimum of printed support. The handle is being done separately.
Glossary |
All-in-one case mold
A method of 3D printing the case mold shell of an entire assembled plaster mold for slip casting. |
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