Read MSDS of product for specific details. Use eye, skin, and respiratory protection in accordance with good industrial hygiene practices. Dust from products may cause eye, skin, nose, throat, or respiratory irritation. Failure to follow these instructions can cause severe chemical burns that may require surgical removal of affected tissue. for a low - expansion gypsum cement, was taken to Knoxville for the trial spray- ing. DO NOT attempt to make a mold enclosing any part of the body using this material. About 25 lb of Ultracal 30, a trade name of the U.S. 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. WARNING: This product is for making molds of industrial patterns only. ![]() Do not mix with your hands, A paint paddle or electric paint mixer is recommended. Please note that parts can be in grams, ounces or pounds etc. The average setup time is 25-35 minutes when manually mixed. Low-absorption, designed for use in case molds. Composition/information on ingredients Mixtures Crystalline silica (Quartz) 1 < 0. MIX RATIO: The manufacture recommended mix-ratio of Ultra Cal 30 is (38 parts water to 100 parts) Ultra Cal 30 by weight. Superior tooling gypsum cement features exceptional strength and hardness. It was designed to give the patternmaking industry the ultimate in a gypsum cement tooling medium. Ideal for splash-casting molds and models for phenolic, polyester and epoxy resins. Stone breakage in SWL was assessed by several methods including measures of the increase in projected surface area of SW-treated stones. Has a gradual set and long period of plasticity. ULTRACAL 30 cement has the lowest expansion of any rapid-setting gypsum cement available. ![]() Has a gradual set and long period of plasticity. Ultracal-30 gypsum cement was mixed 1:1 with water, cast in plastic multi-well plates, then, the stones were liberated by dissolving the plastic with chloroform and stored under water. 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. ![]() Super-strength gypsum cement recommended where extreme accuracy and greater surface hardness are required, as in duplicator models. Perfect for making molds for latex and mother molds.
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