Learn HOW TO MAKE A MOLD WITH PLASTER OF PARIS - FOR BEGINNERS by watching this video. For more great tips and a step by step process for this video, go to h...
- 12 min
- Jeremiah Brown
Plaster of Paris is a molding material composed of calcium sulfate hemihydrates, calcium carbonate and crystalline silica. By mixing the powder form with water, you can make simple molds to use for small craft projects--with the exception of hand prints.
Jul 31, 2020 · If you don't have plaster of Paris powder, there are a few ways to make homemade plaster for art projects. Both white flour and white glue can be substituted for the plaster powder. The ratio is the same, so use one part warm water and two parts either flour or glue. If you are using flour, stir it and the water together to make a thick paste.
- Kathryn Walsh
Mix plaster of Paris in water as per instructions on the label. Make sure it is neither too thick nor too thin. Pour the plaster into an aluminum pan and immediately place the letters in the pan so that they are fully dipped, but not the back side or it will be difficult to extract them. Allow the plaster to settle completely and dry.
- Asif Nadeem
You can you this mold for casting most metals. I haven't used this before but I was planning to use it on molding aluminum to see it plaster would work as a ...
- 6 min
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- Kristen Porter
- Gather your tools and ingredients and prepare your mold. The process of making a handprint moves quickly, so you want to be sure that you have everything ready.
- Prepare plaster of Paris. Read the instructions on the package of plaster of Paris. Most brands suggest 2 cups plaster of Paris to 1 cup of water.
- Prepare your subject's hand for molding. Clean the hand you will be using and then coat it with spray oil or petroleum jelly.
- Pour the plaster of Paris mixture into the prepared mold and tap it lightly on your work surface to allow air bubbles to float to the top. Pour more of the mixture into the mold until it is about three-quarters full.
Heat 1 cup (240 ml) to 100 °F (38 °C). Warm water works best to help speed up the process. Use either a microwave or a stove to heat the water to the correct temperature. X Research sourceCombine the water with 2 cups (256 g) of flour in a mixing bowl. Pour the water over the flour as evenly as you can. Once all the water is added, start stirring the mix with a spoon or spatula. X Research source If you’re worried about dried plaster sticking to your utensils, use a disposable plastic spoon.Stir the mixture with a spatula until there are no lumps. The consistency should be a thick white paste when you’re finished. In the end, the plaster should be thick, but not difficult to stir. If it seems too thick, add more water. If it is too runny, add more flour until it thickens.Work with the plaster within 10 minutes. You’ll notice the plaster mixture will start to solidify as you work with it. Pour the mixture into your molds as soon as you’ve finished stirring it for the best results.Let the plaster set for 48 hours. The plaster may seem to dry within 24 hours, but it will not be completely set through. Allow it to sit at room temperature for 2-3 days to dry. X Research sourcePlaster of Paris powder can be purchased at craft stores or online for the easiest mix of the product. Thanks! Helpful 7 Not Helpful 1Wear gloves and an apron to prevent any spills or splashes. Thanks! Helpful 6 Not Helpful 1Do not wash leftover plaster of Paris into the sink since it may clog your pipes. Instead, let it harden and then throw it in the trash. Thanks! Helpful 4 Not Helpful 1Plaster of Paris dries quickly, so wash it off immediately if it comes into contact with your skin. Thanks! Helpful 8 Not Helpful 7Don't use any part of your body as a mould otherwise it will be very hard to get it back out. Thanks! Helpful 4 Not Helpful 6
- wikiHow Staff
- 2 min
the process of mold–making and casting, and the same principles can be used to create multi-part molds from more complex original objects. Materials and equipment: • An original object to be duplicated • Modeling clay • Plaster of Paris • Petroleum jelly or other type of release agent • Acontainer for pouring your mold into (such as a