How To Make Fossils Using Plaster of Paris

Making fossils is a great way to teach your child about science and history.You can make your own replicas with a minimum of skill and material.Here’s how to start.

Step 1: You should gather your materials.

If there are children around, lay down some newspapers, put away any objects you don’t want to get sticky, and grab your essentials.You will need a small natural object.A disposable dish or Tupperware container is used for the plaster of Paris Water.

Step 2: Pick the object you want to make a fossil of.

Nature’s shells, leafs, and animal bones are all good choices.Make sure the leaf is not cracked or dry.It has to fit in your container.

Step 3: The object should be coated with petroleum jelly.

The object will not stick to the plaster when you try to remove it.It needs to be coat thoroughly.

Step 4: Place plaster and water in a bowl.

The plaster of Paris packaging has directions on it.Allow the mixture to sit for a few minutes without stirring.You can adjust the water to plaster ratio as you please.

Step 5: The plaster of Paris has an object in it.

Don’t push too hard.All you have to do is dry it.It will take at least one day to dry it.

Step 6: The object should be removed.

After you’ve waited 24 hours, pop your natural item out of the plaster of Paris.There’s your fossil!It’s like a shell was left in the soil for thousands of years.

Step 7: Clean the area.

This isn’t the cleanest of projects because you’ll be modeling clay and plaster.Let’s start by laying some newspapers down.You’ll need paper towels, plastic spoons, and plaster of Paris Water Modeling clay.

Step 8: The plaster of Paris should be combined with water.

Use 1 part plaster of Paris to 2 parts water and mix in a paper cup with a plastic spoon.While you work with the clay, let it sit.

Step 9: You can choose an object for your fossil.

The leaves, shells, branches, and bones work best.Make sure you have enough clay and plaster to cover it.

Step 10: The modeling clay needs to be kneaded until it is soft.

This is the object that rests and forms an impression on you.It needs to be kneaded to cover the object.

Step 11: The object should be coated with petroleum jelly.

Slowly press it into the modeling clay.Be generous because the petroleum jelly prevents it from sticking to the clay.Carefully remove the object to create a mold.

Step 12: You can use plaster of Paris to create an impression of your object.

To make a flat surface, smooth the plaster to the level of the clay.Place your clay and plaster mold on a newspaper, paper towel, or other disposable surface to allow it to hardened.2 or 3 days is safer than waiting at least overnight.

Step 13: Remove the clay from the plaster to get the fossil.

The plaster recreates the shape of your object.