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A fun way to play with gravity.

You'll need:

1. Hammer with a rubber grib (has an edge for the string to catch)
2. string
3. ruler

You can use other objects but these are easy to find and definitely work.

 

So nice
Magical
This is officially on my &quot;To-Do&quot; list!<br>5 star and following!
This is great fun- so effective with the hammer.<br><br>I'm definitely trying it!

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