Jeff Longtin on sun 28 dec 03
LJ,
Only because it probably seems I might actually be able to help you will I
throw this out.
Pottery Plaster is what I use in my studio to make slip-casting molds. The
standard mix ratio is 70 parts water to 100 parts plaster. Yes, Plaster of Paris
is the same type of material but, I do believe, it is of a poorer quality? I
don't use the stuff so I'm not too familiar with it.
I have not tried to create what you are trying to creat so I'm unable to
provide further assitance.
I'll throw out this tidbit though: I learned a few years back that all that
plaster ceiling adornment stuff you see in old homes and buildings, cornices
and the like, were not attached using brackets or screws but were attached with
a thin plaster slurry. In other words, a thin plaster slurry was applied to
the wall where the cornice was to be, and then the plaster cornice was quickly
pushed into it. The plaster, in drying out quickly as a result of being applied
to porous surfaces, apparently creates quite a adhesive-like effect. It does,
however, sound like your objects are rather heavy so I would not suggest you
try this.
If the material is too be painted anyway have you ever thought of Friendly
Plastic or something similar? I'm sure you could probably fashion something
fairly large AND somewhat lightweight? I would think safety and falling off the
wall are two concerns you might want to consider.
take care
Jeff Longtin
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