anon3034 Posted May 22, 2012 Report Share Posted May 22, 2012 Well, I don't know if this technically classified as pottery, but I need to make a pot replica, the conundrum I'm having is that I don't know how to fill it with gypsum/silicone and then pull it out, since it's bulbous-shaped and the mold itself wouldn't fit trough the opening. Am I just missing something completely obvious or what? Thanks. EDIT: It's shaped like this, more or less. Link to comment Share on other sites More sharing options...
bciskepottery Posted May 22, 2012 Report Share Posted May 22, 2012 You'll need to make a two-piece mold. Check Youtube for videos, or any of a number of books and DVD's on plaster mold making. Link to comment Share on other sites More sharing options...
Lucille Oka Posted May 23, 2012 Report Share Posted May 23, 2012 Keep in mind there will be shrinkage of the final cast; you must allow for this when replicating a finished piece. A two part or even three part mold, with a spare, will work very well for a mold of this vessel. Link to comment Share on other sites More sharing options...
Lucille Oka Posted May 24, 2012 Report Share Posted May 24, 2012 I re-read your post and I am not quite sure if I understand fully what you meant. So to clarify a bit about mold making, when a mold is made of an existing vessel the exterior shape is what is used not the interior. There are a few aspects to this process that cannot be covered in the limited space of these posts. It is best before you try to make a mold to research the process thoroughly. A library search will yield good results. Link to comment Share on other sites More sharing options...
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