CALCAST 100 molding plaster

Particularly fine and white beta-hemihydrate plaster for the production of objects, casting moulds and support moulds.

Due to its low expansion during hardening, this plaster offers a combination of high casting accuracy and considerable hardness. Due to its composition, CALCAST 100 is finer and whiter than normal plaster. When hardened, CALCAST 100 is more brittle than CALCAST 200.

In combination with chamotte gravel, CALCAST 100 is very suitable for the production of gypsum-bonded investment materials for bronze casting using the lost wax process.

Due to its good absorption capacity, CALCAST 100 is also suitable for the production of casting moulds for ceramic materials. CALCAST 100 is also very suitable for frames and ornaments.

Processing:

Slowly pour 25 kg of CALCAST 100, if necessary through a sieve, into a suitable container with 18 litres of clean water. Allow to soak for approx. 1 minute, then mix thoroughly for approx. 3 minutes to obtain a uniform, lump-free mixture. Please note that the type and speed of mixing can affect the processing time and other product properties.

Technical data:

Processing time: approx. 11 minutes
Start of the setting process: after approx. 11 minutes
End of the setting process: after approx. 35 minutes
Processing temperature: from approx. + 5° C to + 25° C (substrate & ambient temperature)
Mixing time: approx. 3 minutes
Mixing ratio: 18 litres of water to 25 kg of CALCAST 100
Yield: 25 kg of CALCAST 100 with 18 l of water produces approx. 27 l of gypsum mortar
Flexural strength: 28 days > 6 MPa
Compressive strength: 28 days > 12 MPa

CALCAST 100 molding plaster is not harmful under normal use and does not contain any environmentally harmful substances.