Super-strength gypsum cement recommended where extreme accuracy and greater surface hardness are required, as in duplicator models. Harder and stronger than HYDROCAL A-11 and HYDROCAL B-11 cements, UltraCal 30 cement has the lowest expansion of any rapid-setting gypsum cement available. Has a gradual set and long period of plasticity. Ideal for splash-casting molds and models for phenolic, polyester and epoxy resins. It was designed to give the pattern making industry the ultimate in a gypsum cement tooling medium. MIX RATIO: The manufacture recommended mix-ratio of Ultra Cal 30 is (38 parts water to 100 parts) Ultra Cal 30 by weight. The average setup time is 25-35 minutes when manually mixed. Please note that parts can be in grams, ounces or pounds etc. Do not mix with your hands, A paint paddle or electric paint mixer is recommended. WARNING: This product is for making molds of industrial patterns only. When mixed with water, ultra cal undergoes a chemical reaction which causes it to harden and then slowly become very hot and highly alkaline (corrosive to skin like drain cleaner.) If mixed incorrectly this process can happen very rapidly. DO NOT attempt to make a mold enclosing any part of the body using this material. Failure to follow these instructions can cause severe chemical burns that may require surgical removal of affected tissue. Dust from products may cause eye, skin, nose, throat, or respiratory irritation. Use eye, skin, and respiratory protection in accordance with good industrial hygiene practices. Keep out of reach of children
N**3
Very smooth
Pricey but the product is worth it. Does not set extremely fast, but you can't dilly dally either. I would recommend this product. I don't have any experience with cement all or any type of plaster, so this is the first time doing molds with a product like this.
J**Y
The best for molds
I use this for making molds of clay sculptures. Does the trick! Easy to work with, and very durable
M**S
Awesome product! Works Great!!
1st time using this and making rocks from it. It worked great! Was ready to make more immediately! Awesome product! Thank you!
N**T
Perfect product
Perfect product for casting stones, on my second order and completely satisfied.
C**S
Misleading
The item looks nothing like what is pictured, you get a VERY small amount. I wanted to use for wall panel molds. 1 bag made one 1 foot x 1 foot panel that is maybe 1/2 deep. It worked well, but you would be better off getting a LARGE bag at your local hardware store for less than half of the price.
S**Y
Perfect for mask making!
Great product! This was our first time making a latex mask and after 10billion video tutorials we bought this gypsum cement along with monster clay and mask latex and made our boy the best Halloween costume e-vah! It was a lot of work but a lot of fun- and this gypsum is the real deal. Really great product!
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1 week ago
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