hydroperm molds

Nancy B

Hi Pam,

While I’m a new fuser and have not used hydroperm molds, I do have info that may help.  In Brad Walker’s book “Contemporary Warm Glass” (p48), he describes 2 types of gypsum cement molds:  hydroperm and hydrocal.  In his description he writes:  ” By contrast, gypsum cements do not need kiln washing.  They are also able to pick up more detail than the other kinds of cements.”    Good luck -your project sounds like fun.



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