Ultracal 30 Gypsum Cement 2.5 lbs / 1.13 kg - Plaster - For Mold Making and Casting, Ideal for Latex Molds! Takes Excellent Detail

Quality product. Dries in days instead of hours but has a nice, smooth surface when removed from silicone mold. No sanding needed to achieve a smooth painting surface for my project.

Ok so shipping is crazy fast and everything was perfectly packed. The directions were super clear and I've already used it and it performs EXACTLY as advertised - all good, except, I'm math handicapped and for the life of me I could not figure out the mixing ratio. So I had to get some outside help. Wish there was an easier way to calculate but dont let that stand in anyone's way

I like the fact that it's clear and smooth and that you can color it. However unless I aimlessly tossed away the instructions it needs to be clear that to much water and your piece will set at the bottom and you will have to pour off the water on top. I found for my pyramid I had to make it a slightly thicker pancake consistency.

Easy to mix! SUPER STRONG! Great for mini terrain!

Love this product. It was exactly what I expected. Pachaged perfectly and arrived quickly.THANK YOU.

I love this stuff for molding...bought it to make a mold of my teeth. As a warning do NOT mix bare handed. It is quite detailed depending on how soupy you mix it. Low shrink and strong...as a test i purposely broke the tip of the wing off the concrete scarab. Only the tip broke lol and it took more pressure than i thought. If you only do small projects like teeth or small molds 2.5lbs is perfect.

Use this to make cremation stones. This was so easy to use that I was flabbergasted. I just used resin molds that I had on hand to test the process out and it worked awesome! Will be ordering much more!

It worked well for what I needed it for, which was to make art stones to paint on.