How to Make a Pencil Eraser
Erasers are cheap and plentiful, but it isn't much fun to traipse down the aisle of your local office supply store and just purchase a few. Why not turn making an eraser into a little science experiment? It doesn't take a lot of time to make erasers and this experiment can be a great group project for kids of all ages.
Things You'll Need
- Pliatex Mold Rubber
- Three bowls
- Stirring spoon
- Flour or talcum powder
- Safety goggles
Put on safety goggles to protect your eyes.
Mix equal parts Pliatex and water, depending on how large you want the eraser to be. In a different container, put half as much vinegar as you have combined between Pliatex and water. For example, if you combine 10 ml water and 10 ml Pliatex, you will need 10 ml of vinegar.
Pour the Pliatex/water combination into the vinegar and stir the entire concoction at the same time.
Shape the eraser rubber to your liking. It should be malleable enough to make into shapes. Use flour or talcum powder if the material is too sticky to work with.
Remove the rubber after a moment and place it into a container with water. You will need to remove any bubbles during this step.
Remove the rubber from the water and let it dry. This step may take several hours. Once it dries, you will have your new eraser!
- Experiment by adding small amounts of gritty material such as sand or table salt to the rubber to make your eraser more effective.
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