The thinner the plaster of Paris is, the quicker it dries, so it depends on what you are using it for. To be safe, I would leave it for 24 hours until it completely dries.
yes. just let it dry
To build a model pyramid out of plaster of Paris, coat the inside of an ice cube tray with petroleum jelly. Pour plaster of Paris inside and allow to dry. Once dry, place the blocks in a square pattern, gluing them together with plaster of Paris. Stack another row atop the bottom row, insetting each row to form a pyramid shape.
The speed at which anything dries is dependant on the surrounding environment, temperature, air circulation & humidity would all influence the time taken, also the quantity & surface are of the object made from plaster of Paris
Less than a week. Depending on the temperature.
It's calcium sulphate dihydrate, or 'Gypsum'.
There are several types of plaster...so it all depends on the type of plaster you use. Lime plaster...may work...dry plaster is what they use for walls and stuff...maybe if the temp is very low it may work but I think plaster is flammable to an extent
dead burned of calcium sulphate is formed which is extremely dry and hard
A sand dollar is very dry and fragile as though it were a large coin made of plaster of paris.
Get a mould and plaster. Pour water into the plaster and mix. Pour the plaster into the mould and wait for it to dry. Once it is dry carefully take the plaster out of the mould and paint. Note:To get air bubbles out of the wet plaster, gently hit the mould.
Painting on dry plaster as opposed to painting on wet plaster. Painting on wet plaster is more permanent because the paint is infused with the plaster.
Gypsum uses include: manufacture of wallboard, cement, plaster of Paris, soil conditioning, a hardening retarder in portland cement.
Sure! But what it probably can't be turned back into is usable plaster. They make plaster by dehydrating gypsum. When you add water to it, the gypsum particles absorb water. Unless you dry the powder you made out, you can't use it again.