Obviously, if you keep 'working' it - moving it around, squashing it, etc - after it's began it's permanent setting, then its strength will be compromised.

Apply the plaster right away. Once it's been mixed, pour the plaster onto a damp spot board to prepare it to be scooped onto a hawk. [22] X Expert Source Ryaan Tuttle If you are around plaster dust every day and never protect yourself, you may start to develop a cough or even asthma. Sometimes some walls need to come down, and other times, there are simply hidden dangers behind the paint, furniture, or cabinetry. Avoid under- or over-mixing. Keep your mixing time to no less than 1 minute and no more than 2. When plaster isn't properly mixed, it has a tendency to separate. On the other hand, overmixing can cause bubbles to form, which may decrease the strength of the plaster or ruin the smoothness of the finished wall. [19] X Research source If you don’t have a sander with a vacuum attachment, you can still stand by with your regular work vacuum and try and grab as much out of the air as you can.

How can I reuse or recycle … a bag of plaster?

I bonded out most of the depth and skimmed around 3mm with the plaster. Around 10 mins working time so plenty for a single chase Hi there! Have you tried panting on the plaster after it is dry but before you seal it? Was curious if that worked and if so, what type of paint would be best suited for that. Thanks so much for sharing this wonderful idea!

Wouldn't attempt to use for a larger area due to speed of set but then again, I wouldn't attempt to plaster a larger area as I know my limitations and wouldn't be happy with the finish Plaster sets chemically and water is the agent that allows it to happen. It's nigh-on impossible to keep things 100% dry for long, even inside a supposedly poly-sealed bag. Plaster is a building material used for the protective or decorative coating of walls and ceilings and for moulding and casting decorative elements. [1] In English, "plaster" usually means a material used for the interiors of buildings, while "render" commonly refers to external applications. [2] The term stucco refers to plasterwork that is worked in some way to produce relief decoration, rather than flat surfaces. Gypsum plaster, [12] also known as plaster of Paris, [13] is a white powder consisting of calcium sulfate hemihydrate. The natural form of the compound is the mineral bassanite. [14] [15] Etymology [ edit ]Gypsum plaster, gypsum powder, or plaster of Paris, is produced by heating gypsum to about 120–180 °C (248–356 °F) in a kiln: [18] [13] CaSO 4 ⋅ 2 H 2 O ⟶ heat CaSO 4 ⋅ 1 2 H 2 O + 1 1 2 H 2 O ↑ {\displaystyle {\ce {CaSO4.2H2O {\overset {heat}{{}->{}}}{CaSO4.1/2H2O}+ 1\!1/2 H2O Using a 5 to 1 ratio, scoop 5 parts powdered plaster into a medium sized container, and then scoop 1 part powdered tempera into the bowl. Stir together until an even color throughout is achieved. Some of which are also available online, so I’ve linked them above just in case. Where to Find Rubber Molds for Plaster Protect your work area. Working with plaster can get pretty messy. To safeguard your surroundings and avoid an extensive cleanup process later on, it's a good idea to lay down a drop cloth or tarp. Make sure you have all the tools and equipment you need on hand to avoid wasting valuable time searching later on. [3] X Research source

If you follow certain precautions before you even have the chance to breathe in the dust, you will save yourself any irritation.Again, you can avoid this by wearing the proper personal protective equipment and limiting your exposure.