I'm a "Penny Come Lately" to this discussion, but when I checked the
replies there was no mention of the use of silicone molds. This method
might be what is needed, though I've not tested papercrete in these
molds (or, at all! YIKES!---but I will!)
I do know this...I can PRESS a commercial version of "paperclay" into a
silicone mold, and after just a few minutes remove it from the
flexible mold (carefully) and then set it aside to dry. Mind you, this
mix is more like a stiff pie dough consistency...there is no water
runoff at all. I can also use plaster in these molds so perhaps there
is a recipe where the ingredients come closer to a plaster feel. I'm
thinking some of Charmaine's lime putty with paper additives, well
squeezed??
When using a more liquid product (LiQuaChe--a polymer fiber/paper
slurry mix) in a plaster mold, it took forever to set up mostly due to
my lack expertise in making plaster molds/using this particular mixture.
If one wanted to copy any given molding profile, decorative element,
etc that is still attached to a wall or ceiling I would recommend using
a thixotropic molding material such as silicone which can be painted
onto any vertical surface and be built up on succeeding layers of
itself to get the correct thickness. Check out www.smoothon.com.
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