How to make an hourglass | Making an Hourglass with a Plastic Bottle 

Today I want to show you how to make an Hourglass at home | How to Make an Hourglass with a Plastic Bottle.
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Tools and Materials:
2 plastic bottles
2 pieces of pencil
Quick adhesive, cardboard, scissors, utility knife, colored sand
#ideas #inventions #self-help
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