Back

Crystalcast gips for casting glass 22,5 Kg

  • Crystalcast gips for casting glass 22,5 Kg

1-2 days

    € 46,28

    Add to wishlist

    • Fast shipping! Everything available from stock
    • Buy from the specialist
    • Shipping Worldwide
    • Not good? Money Back!
    Placeholder4.8

    Ratings

    Product description

    Crystalcast gips for casting glass 22,5 Kg

    GRS Crystalcast is a plaster-bonded investment powder specifically designed for casting glass.

    Read the full product description

    • Professional results
    • Simple processing
    • Ideal for glass art
    • Ideal for core material in ceramic shell sytems

    Description 

    GRS Crystalcast is a plaster-bonded investment powder specifically designed for casting glass. The refractory content and permeability of Crystalcast enables firing cycles to temperatures as high as 900°C for as long as 10 days depending on the mould size.

    To enable the removal of filigree work from the mould without breakage and for ease of use, Crystalcast has been designed to have high strength during firing, yet removal from the cast item when cool is very easily achieved, limiting any chance of damage.

    Technical data

    % of water used

    [powder:water]

    100:32% 

    Mixing time

    [Min]

    4

    Working / Casting time

    [Min]

    4

    Setting time

    [Stunden]

    3

    Liquid density

     

    1.80

    Weight per liter of slip: 

    1800 g

    1463 g powder /
    337 g water


    Procedure for the Lost Wax process

    The recommended plaster to water ratio is 100 parts of plaster for 32 parts of water. 

    a) Mixing Mixing plaster in water is the most important step in making a mould and could heavily impact resistance, hardness and absorption properties if performed incorrectly. For optimum quality, vacuum mixing is recommended.

    Always ensure the following points:
    1. Plaster and water are precisely weighed.
    2. All equipment is clean.
    3. The mixing cycle is adhered to.

    b) Casting Pour the mix immediately after finishing mixing. Make sure that the mixture does not become too thick or too hard. Always pour the mixture so that it slowly covers the surface of the part to be reproduced, without trapping or creating air bubbles.  Vacuum casting avoids forming air bubbles

    c) Plaster setting Do not handle plaster containing wax model until it has reached its setting time to avoid any defects in the finished part. Wait at least a minimum of 1,5 hours before starting the drying cycle.

    d) Dewaxing, wax is removed by the steam de-wax process. This process can take up to 4 hours and is dependent on mould size. Care must be taken not to steam de-wax the mould for too long as it can cause damage to the mould surface.

    e) firing, The de-waxed mould filled with glass crystals is placed in a cold oven and fired as per graph. The furnace should be ramped up at no greater than 50°C per hour until a temperature of 850°C is achieved, this temperature is to be held for around 30 hours; the length of time is dependant on mould size. When the glass becomes molten it flows under gravity into the voids of the mould completing the casting process.

    The mould must be cooled in the furnace at a rate of no greater than 10°C per hour to ambient temperature. At this point the ceramic mould can be gently removed from the casting; never quench glass or crystal castings.




    Shelf Life

    Do not expose to freezing and moisture, 12 months under dry condition pictures

    Health and Safety

    HYDRACAST™ CreArt may generate dust. We therefore recommend that a mask be always worn whilst working with this refractory product and to ensure that the workplace is well ventilated. 

    Product Information

    Product information Crystalcast (EN)

    Picture: Après l'amour by Daum and Sylvie Mangaud Lasseigne

    Specifications

    Specifications for: Crystalcast gips for casting glass 22,5 Kg

    • Color White
    • end Color White
    • Working Time 4 minutes
    • tensile strength NM
    • Mixing ratio A/ B 100:32
    • View all specifications
    • compressive strength NM
    • Density 1,8 g/cm3 wet

    Product tags

    Reviews

    Recently viewed

      • GRS Goodwin Crystalcast

      Crystalcast

      € 46,28

      GRS Crystalcast is a plaster-bonded investment powder specifically designed for casting gl...

      Compare

    Compare products Delete all products

    You can compare a maximum of 3 products

      Hide compare box
      Crystalcast gips for casting glass 22,5 Kg

      Crystalcast gips for casting glass 22,5 Kg

      € 46,28

      Please accept cookies to help us improve this website Is this OK? YesNoMore on cookies »