How to Make Plaster of Paris

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Plaster of Paris is a simple material for making crafts at home. You only need water and flour, or glue and water (if you don’t want to clean up too much). After mixing, you can use it to put in molds, mold into molds or even make plaster powder.

Table of Contents

Steps

Making plaster of Paris from flour

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Heat 1 cup (240 ml) of water to 38°C. Warm water will help speed up the process. You can use the microwave or stove to heat the water to the right temperature. ^[1]

Pour water into a bowl containing 2 cups (260 g) of flour. Pour water evenly over the dough and start mixing with a spatula or spatula. ^[2]

• If you don’t want the plaster to dry out and stick to the tool, you can use a disposable plastic spoon.

Mix well with a spatula until the dough is no longer lumpy and becomes a thick white mass. Eventually, the plaster will become thicker but not difficult to mix. If the mixture seems too thick, add more water. If the mixture is too liquid, you need to add more flour until thickened.

Mix the plaster for 10 minutes. The gypsum mixture will gradually solidify during the mixing process. As soon as the mixture is satisfactory, pour it into the mold.

Let stand for 48 hours. The plaster should dry within 24 hours, but not yet completely harden. You need to leave the plaster at room temperature for 2-3 days to completely dry. ^[3]

Use glue

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Heat 2 to 3 cups of water (480 – 700 ml) to 38°C. You can use the microwave or stove to heat the water to the right temperature.

Mix 1 cup of water (240 ml) with 2 cups of colloidal milk (480 ml). Put the water and glue in a bowl and use a spatula to mix well. Pour in the water a little at a time until the plaster becomes a soupy consistency. ^[4]

Mix for about 15 minutes and then use. Glue plaster will take a little longer to dry, but you can still use it as soon as you’re done mixing. Pour the plaster into the mold to create the shape you want. ^[5]

Wait 48 – 72 hours for the plaster to dry. Because it is made from milk glue, the mixture will take longer to harden, you will need to wait about 3 days for the plaster to dry completely. Keep the mixture at room temperature so that the plaster dries evenly. ^[6]

Advice

• Plaster of Paris is available at craft stores or online. This is the easiest way to mix plaster.
• Wear gloves and an apron to prevent the plaster from spilling or splashing.

Warning

• Do not wash excess plaster of Paris in the sink because it can cause water pipes to clog. Instead, let the plaster harden and throw it in the trash.
• Plaster of Paris dries very quickly, so wash it off immediately if it comes into contact with your skin.
• Do not use any part of the body to make the mold because it will be difficult to clean or remove the plaster. ^[7]

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Things you need

• Measuring cup
• Flour mixing bowl
• dredge
• All-purpose flour
• Warm water
• Stove or microwave
• Milk glue
• Plaster mold

Plaster of Paris is a simple material for making crafts at home. You only need water and flour, or glue and water (if you don’t want to clean up too much). After mixing, you can use it to put in molds, mold into molds or even make plaster powder.

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