Alpha Hemi-Hydrate modelling plaster

Product Description

CALCAST┬« 300 is a 100% ╬▒ – hemi hydrate.The plaster is calcined in a so called autoclave under steam pressure which gives a different kind of crystal structure.It needs less water to hydrate and therefore the hardened end product is much harder than that of traditional plaster. It is mostly used for ;

  • casting decorative items
  • master moulds
  • building chemistry as an expansive agent for high alumina based mortars
  • general use where an extreme hardness is required


  • 25 kg. bags
  • big-bags