JJ Native Ceramics Posted May 30, 2018 Report Share Posted May 30, 2018 I have a older mold that I would like to use but I don't like the design on the bowl! Am I able to sand the design off without it sticking when I go to pour it? Do I need to seal it? Any help would be greatly appreciated! Link to comment Share on other sites More sharing options...
oldlady Posted May 30, 2018 Report Share Posted May 30, 2018 there is very little info in your post to help with an answer. a photo would help a lot. if not, a more complete description of the problem would help. sounds like you are a mold using, slip pouring potter with a mold that produces a raised area on the finished bowl. or, maybe ............................? Link to comment Share on other sites More sharing options...
Rae Reich Posted June 3, 2018 Report Share Posted June 3, 2018 You might be able to sand it down to below the surface, then fill the voids with fresh plaster that you smooth as perfectly as possible - maybe by burnishing or laying on a smooth piece of plastic sheeting. Be prepared for irregularities, although you may not require a perfectly smooth form to work with. Link to comment Share on other sites More sharing options...
hitchmss Posted June 11, 2018 Report Share Posted June 11, 2018 Fill the design with a oil based clay, make a new master of silicone/urethane, and cast new mold off master. If design is positive in shape(in the plaster mold, not the casting); protrudes into mold, then possible to sand down, but if it's negative in shape it's unlikely youll be able to get new plaster to stick, especially if it's a thin design. Link to comment Share on other sites More sharing options...
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