A very low expansion, gypsum cement used widely in the SPFX industry. Makes hard, super strong precise moulds. Ideal for foam latex moulds, where durability and detail reproduction are a concern. Can be heated in an oven. (Please note that is product is not for use on skin and is NOT a life casting material.?  FOR PROFESSIONAL USE ONLY!

WARNING? This product is for making moulds 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 mould 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. Read MSDS of product for specific details. Product safety information: 0800 263939. KEEP OUT OF REACH OF CHILDREN.


MIX RATIO: The manufacture recommenced 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 jiffy mixer is recommended

Not what is pictured