Therefore it is half the price for an industrial grade high strength plaster compared to dental stones. The dental stones cost locally around A$100-120 for 25kg vs $50 for the Patternstone H mentioned above. (Ph:9519-7223) They suggested an industrial plaster called Patternstone H at a cost of approx A$50 for 22.5kg. Whilst hunting down dental plaster suppliers (Denta Vision Ph:9899-6555)I was led to a plaster manufacturer in Marrickville, Sydney called Ainsworth Dental Company P/L. Also if looking for plasters in local areas look in the yellowpages under ceilings, there is heaps of plaster supplies! I've found an awsome site for those people of australia who are looking for casting/molding/sculpting supplies! Go to they are a supplier to the entertainment industry for special effects and such.

These comments are taken directly from the message board on my web site. Please note that I have not tested these out personally, so I can't guarantee that the reviews are accurate.

If you have information on a product that you like, please e-mail me at so I can add it to the list shown here. Many countries and products are not listed because I have not received any information from cutomers in those locations. This is a list of casting products that have been reviewed by our customers. Have you tried using a deflocculant? In theory your clay has no elements that are antagonistic to the molds but it could be your clay does have things in it that are not friendly to your plaster molds.Shopping Cart Customer Reviews of Overseas Products Does your source differentiate between the three?Ĭlay - without deflocculant you need to add more water than is necessary. If my memory serves me correctly there are three kinds of 'plaster' pottery plaster - for casting ceramic objects, gypsum cement - harder than pottery plaster but still absorbent, for machine pressing of ceramic objects, and casting plaster - designed for the giftware industry for very hard plaster objects which take paint well. One question jumps to mind: are you using the proper amount of water or 'as little as possible'? Most casting plasters, I think, use 35-40% water.ĭo you have access to 'pottery plasters'? Casting plasters, from my knowledge, have hardeners which make them more durable than pottery plasters but also less absorbent. Hey thanks for the response I have been using casting plaster to make my molds with as little amount of water Can you fill in the detail such that the mold is more durable but allow for easy touch up after the piece comes out of the mold? Sometimes its more cost effective to have a mold with less detail, but can cast more pieces, than a mold with fine detail, which wears out quickly. Are you monitoring your deflocculation carefully? If your slip has too much deflocculant that will cause early deterioration of your molds. The other factor, which Neil touches upon, is the consistency of your slip. You would simply need to allow the slip to sit in the mold longer. (More like cement than plaster.) It does absorb, just not as quickly, as pottery plaster. Ceramical, for RAM presses, is absorbent and quite durable. If anything you could try other kinds of plaster. Without that I'll throw out a few broad suggestions: I wouldn't suggest adding anything to the plaster itself. The answers, to Neil's questions, would help us have a better picture of what's going on with your situation.

Herculite no.2 casting plaster