Plaster is a handy multi-purpose patching compound for many household repairs, but it dries out quickly as it's being used. If it dries out too quickly, you have to add more water to soften it back up, and this degrades the integrity of the plaster. Instead, use vinegar from the very beginning to give yourself plenty of time to use all of the plaster you mix.
Things You'll Need
- Dry plaster
- Measuring spoon
- Measuring cup
- Mixing container
- Stirring stick or spoon
Estimate the amount of plaster you'll need for your project using the mixing information on the plaster package. If you're unsure, err in favor of making too much plaster rather than not making enough.
Pour the desired amount of dry plaster into your mixing container.
Measure the proper amount of water by referencing the instructions on the plaster package. Make sure you use lukewarm water. Add the water to the dry plaster.
Quickly add 2 tbsp. of vinegar to the mixture.
Stir the plaster thoroughly with a stirring stick or spoon.
Apply the plaster to your project. It will stay moist about twice as long as it would have had you not added the vinegar.
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