Posted 15 December 2012 - 06:05 AM
This is a simple project to do; the flowers are actually shallow bowls. The centers are sprigging. After the casting is released you can alter each finished cast to be unique; also very simple to do.
Slip casting will give a way to replicate the pieces but press molding would be a faster turnaround method. If press molded, a two piece set up would be best, then you can incorporate the coil under the flower or make it separately as sprigging.
Be aware of-
-eliminating undercuts when sculpting your original.
-the shrinkage of your finished product.
-if making a two piece press mold, don't forget to make the clay canal on the edge of the working surface of the mold to accept the excess pressed clay.
-Used a good strong properly mixed plaster such as Hydrocal White to make your press molds or use properly mixed Pottery Plaster #1 to make slip casting molds.
-Do not use release soap on your original clay sculpted piece but when making molds use mold soap
only on the surfaces where the plaster surfaces will touch each other or the cottle surface.
-I recommend getting a good mold making book that covers all methods of plaster mold making.
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