Polycraft Crystacal R Hard White High Strength Casting Plaster, Professional-Grade Gypsum for Art, Crafts and Industrial Use, Perfect for Sculptures, Moulds - 5kg

Brilliant, been trying to find a local supplier but to no avail. Cheaper to buy in bulk but shelf life dictates otherwise. Used for making pebbles to paint which is better than removing ones from our shrinking shorelines. Can remove from the mould in less than 15 minutes, makes really tough pebbles that can survive dropping unlike ordinary plaster of Paris. Will be buying again when this lot runs out.

Takes a little practice but I was getting 💯 sucess after a couple of tries. Excellent results, lovely detail.

Good quality and quick to dry

I added UVA for greater strength, used for making replacement tops for Swedish gilded vintage clocks. Sets rather quickly, getting a strong enough mix that will pour into details requires trial and error to have correct. Once this is found the result is strong and acceptable.

Great product much tougher and smoother than anything lasterbof oatis for casting can be carved and sanded and takes paint really well

I used this to make a complete chess set with quite intricate Mandarin chess moulds. The hardest part was working out how much to mix for each piece as you can't really mix up a lot at once since it hardens very quickly. All the small fiddly bits came out of the mould with no trouble. I painted them with acrylic paint (one set red and the other blue) and lightly brushed them with perfect pearls (gold) to give a bit of a sheen. Don't know if you can add colour to the powder to get a similar effect but I'm going to try it adding a bit of acrylic paint to the mix pre moulding. Absolutely delighted with the product!

I use this product for making my own rocks to paint. It’s brilliant and perfect for those much wanted smooth stones. Always happy with this supplier always packed well and comes quickly, also their communication is brilliant. Definitely recommend to anyone wanting to make their own rocks, it sets quickly and is easy to use. You also gets lots out of each bucket so good value for money

Mixes easy. I mixed it at about 21\2 to 1 and that was about right for pouring. Good fast setting and hard, could take out of moulds in about 15minutes.