What is the difference between Hydrocal and Ultracal?
The difference between hydrocal and ultracal is that ultracal is harder and denser. On the other hand, hydrocal is a casting plaster that does an excellent job when it comes to holding detail. While hydrocal is easier to work with when it comes to posting casting projects, ultracal is more durable.
How long does it take for Ultracal 30 to set?
ULTRACAL 30 is a plaster cement tooling material, which creates a hard, uniform and dimensionally accurate piece. Used for slush casting latex and production of master models. Set time of 30 minutes and mix ratio 38parts water to 100parts Ultracal 30 by weight.
How strong is Ultracal 30?
Compressive Strength, Dry: 6500 psi (44.8 MPa)
How do you use Ultracal 30?
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 jiffy mixer is recommended.
Is Ultracal 30 waterproof?
Quick setting, dense white plaster in water resistant bag. Ideal for patterns, figurines, commercial casts, and sculpture. It is not for making outer or mother molds, and it is not recommended for outdoor use. Designed for strength and casting detail.
What is the difference between gypsum plaster and cement plaster?
Gypsum plaster can be applied on smooth as well as a rough surface. Cement plaster gives a rough surface. Whereas gypsum plaster gives a very smooth finish which makes it compatible with paints. During the application of cement, plaster wastages are high.
How hot does Ultracal get?
The maximum temperature at which USG Ultracal 30 Gypsum Cement molds are safe from calcination is 120 °F (49 °C).
Does Ultracal 30 expire?
USG Ultracal 30 Gypsum Cement should be used within 6 months of the manufacturing date located on the package.
How long does it take Hydrocal to set?
How long does it take for Hydrocal to cure? When manually mixed, the average setting time for hydrocal is between 25 to 35 minutes. You need to make sure that the hydrocal is completely cured before you remove it from the mold. This usually takes up to 24 hours depending on how thick the cast is.
Can you carve Hydrocal?
Hydrocal is supposed to be strong rock hard stuff! Well, yeah, it is. But when it is freshly poured it is in a semi-hard state that is idea for scribing and cutting. And when cured, it can be softened with just a few drops of tap water and easily carved with repeated strokes of your hobby knife.
Is Hydrocal heavy?
As compared to most plasters, hydrocal is stronger. On the other hand, it is still a plaster that is heavy, dense, and can shatter when dropped.