Polythene is a good release agent. It leaves a good surface on the papercrete. It also slows drying by impeding drainage.
Paper works, it just peels off damp papercrete
Bitumen does /not/ work.
> --- In papercreters@yahoogroups.com, "bfenti" <bfenti@> wrote:
> >
> > Thinking of large form papercrete casting and wonder what would work
> as an inexpensive mold release agent?
> >
>
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