How to Dissolve Plaster
- 1). Cover your work area with newspaper to protect it from possible plaster spills.
- 2). Measure water into a plastic mixing bowl. The ratio of plaster to water is 2 parts plaster to 1 part water. Be certain your bowl will hold three times the planned volume of plaster to facilitate proper mixing.
- 3). Break up plaster clumps with a wooden spoon before adding it to the water. Some plaster powder will be free of these lumps, it depends on the storage conditions.
- 4). Sprinkle plastic powder slowly into the water and notice how it sinks. Distribute it across the entire surface of the water as you gently add all the plaster.
- 5). Soak the plaster for one minute by allowing it to sit undisturbed. This allows the plaster to become evenly saturated with water.
- 6). Mix the plaster into the water slowly. Stir gently while mixing to limit air entering the mixture. Beating actions will cause air to get trapped in the plaster.
- 7). Check any corners of your mixing container to be certain that all the plaster powder gets incorporated into the mixture.
- 8). Tap the sides of the plastic mixing bowl gently with a wooden spoon to release any trapped air bubbles.
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