How To Make A Two Part Plaster Mold For Slip Casting
The extra slip is then poured out and you re left with a clay shell.
How to make a two part plaster mold for slip casting. This instructable shows how to make a two part plaster mold of a ceramic bowl or just about anything for that matter that can be used for slipcasting. The beauty of slip casting is that you can make the forms much faster than you could do otherwise and you have the security of knowing that every item will be identical an important factor for some batch production. Here is a short video showing how to make a down and dirty two piece mold of chicken bones.
Recorded on april 11 2011 using a flip video camera. It is a slightly complicated process so be s. This tutorial is demonstrating how to slip cast porcelain in an already existing plaster mold easily and efficiently.
The advantage of a two part mold over a one part where molten material is poured into an open mold is that much more structurally complicated objects can be duplicated in this way. To demonstrate the process for the instructable i have chosen a sea shell since it is an object that cannot be duplicated with a one part mold system but is very streamlined it lacks advanced features such as. Thanks for watching y all.
Slipcasting is a ceramic manufacturing process in which liquid clay a k a. Something to use as a model. Another reason to use a two part mold is if you want to make a rigid mold of a model with undercuts i e.
A mug with a handle is a good example of this. Two part cylinder mould for slip casting. Wrap aluminum flashing around the prototype to serve as cottle boards leaving a 1 2 inch gap between the flashing and the edge of the clay form.
For a tutorial on how to make a plaster mold please refer to the plaster mold making tutorial for more information. The plaster absorbs the slip s water leaving clay behind. Slip casting can be useful for making multiples of one object and to make casts that are hollow on the inside.
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