One was a positive, formed by pressing wet plaster into the wound.
Most authorities agree that they are frescoes-painted directly on wet plaster.
Then more wet plaster, which was not frozen.
It is clear that true fresco, painted into a thin layer of wet plaster, was not used.
The wet plaster gave way at once, and so did the rotten laths behind it.
Tinting can be added to the wet plaster for color effects.
The house smelled like wet plaster and fried eggs.
"You're doing your work out in public, on wet plaster, and everyone sees the process."
Because he painted onto wet plaster, the smell and the heat was terrible.
She leaves an imprint in wet plaster that shows a scar on her butt.