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Hello everyone! Another question from me: is it possible to cast a flat plate (without a foot) with a one-piece plaster mold? I am usually throwing a prototype with a simple white clay on a wheel, then wait until its dry enough and cast a mold, but when i tried making a plaster mold for a flat plate, plaster seemed to heavy for the clay to hold, clay got softer and caved in. As the result: the mold is with a little knob in the middle. Any advices? Thank you! Nata
Hi all, New here as a ceramic arts daily member, but i have been browsing this forum for great info for years! I am currently trying to make an outdoor sculpture for a project I am working on in architecture school. I am thinking about using Hydrocal® White Gypsum Cement to create my sculpture because of its durable qualities and hopefully easy to finish nature (please feel free to advise me if I am right or wrong on these, I am new to working with the material). The question I have involves casting the Hydrocal to create the sculpture. I am thinking about creating a holl
I have a bucket of old porcelain casting slip that I made a couple of years ago, and I'm wondering if I can reconstitute it. It's pretty chunky, it was originally deflocculated with Darvan 811. Can I get it back to a proper consistency for casting? Should I add more Darvan? Also, does Darvan expire?