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Hello, this is my first post so apologies if my question is greener than Robin Hoods long Johns! I have created a plaster (Crystacl-r) mould, originally cast from a newplast (oil based clay like plasticine) sculpt I made. The aim is to paint thickened silicone into it to make some animatronic skin for a creature I'm creating. Anyway, I am having a right old time cleaning the plasticine out of the plaster mould. I've tried casting a layer of latex to pull the bits out, using a hair dryer to attempt to melt the plasticine, using wooden tools to try to scrape it out (which ends up scarring the plaster ) all to no avail. I read somewhere that you can use water and detergent on the mould, but as it is basically a plaster of Paris will this not get absorbed into and ultimately wreck the mould? Can anyone suggest an effective method of cleaning plasticine out of crystacl-r plaster mould, that will not damage the details on the plaster at all? All suggestions welcome... Many thanks in advance! J