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Gesso

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5 article   /   10 Variants
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  • Polvere di gesso tipo ceramica Artestone
    2 Variants
    Polvere di gesso tipo ceramica Artestone
    from 8,30 €
    high quality casting powder, mixing ratio of powder to water is 4:1, working life: 8-10 minutes, curing time: approx. 30 min., expansion: 0.3%, surface hardness (cured): >300 N/mm², 1000 g powder result in 600 ml...
  • Gesso per modellare
    3 Variants
    Gesso per modellare
    from 2,00 €
    white, comes in paper sack with foil insert
  • Garze per gesso
    3 Variants
    Garze per gesso
    from 11,50 €
    white
  • Gesso a base di resina Gedeo
     
    Gesso a base di resina Gedeo
    from 9,90 €
    extra hard, high-quality alpha plaster, synthetic resin bonded, bright white, fine grained, non-clumping, mixing ratio of powder to water is 3:1; setting time is 8 – 15 minutes, demoulding time is 30 minutes,...
  • Gesso duro Gedeo
     
    Gesso duro Gedeo
    from 7,70 €
    a harder and higher quality alpha plaster for artistic castings, course grain, does not clump; mixing ratio of powder to water is 2.5:1, setting time is 8 – 15 minutes, demoulding time is 30 minutes, takes...
Informazioni su Gesso

Uses: Plaster is not only good for fixing broken bones but is a great material for many creative purposes as well. It can be used in model making or handicrafts either as a natural product (made from burned selenite) or as a recycled material (so-called REA plaster which comes from a flue-gas desulphurizing facility).

Treatment: Plaster will cure after only a really short working life of a few minutes. In doing so, temperatures of over 50 °C will occur. In liquid form, plaster can be poured into moulds like, for example, ones made of SILICONE RUBBER. Liquid plaster can be coloured by means of PIGMENTS or, subsequent to curing, painted with most commercial paints (including water-based paint).

Once plaster has solidified, you cannot make it pliable again by adding water because it will never become solid again. By adding cellulose paste (WALLPAPER PASTE) the setting time can be increased somewhat.

If you want to do additional work on a cured plaster piece you must soak the area with water. The plaster will then be amenable to reworking with the appropriate tool without the piece itself breaking. Once dried, plaster models can be sawn, drilled, filed, cut, sanded, etc. Before subsequently levelling out the surface with more material, the plaster should be made moist because otherwise the second coat will not hold.

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