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Homemade gesso

  • 23-08-2016 12:43pm
    #1
    makeandcreate
    Registered Users, Registered Users 2 Posts: 451 ✭✭


    Have been looking at homemade gesso recipes, most have pva glue, talc, cornstarch, baking powder combos - now I have 10 litres of leftover polycell smoothover and assume it is a gypsum based compound.
    Wondered if the smoothover with pva and water would make a gesso , main concern is would it need a preservative added and if so what ....now am thinking would a thicker version work as a modelling paste ...
    Any thoughts ...


Comments

  • #2
    looksee
    Registered Users, Registered Users 2 Posts: 29,095 ✭✭✭✭looksee


    Why would it need a preservative? If it needs one to not go mouldy on a wall, it will have one, otherwise it will not need one.

    Whether to add PVA - probably the easiest would be to coat a canvas with it and another one with a PVA mix - I can see the flexability of PVA could be an advantage, but the only way to see will it work is to try it.


  • #3
    arian
    Registered Users, Registered Users 2 Posts: 220 ✭✭arian


    I think the cell in the original Polycell came about because it was celluose based, rather than gypsum. Dunno what's in Smoothover though.


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