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This is a knex shock absorber built out of knex and rubber bands. It does not use many pieces and could easily be turned into a door stopper or a robo...
This is the upper part of the shock absorber.
You guessed it. It's the middle of it.
Yes I know. This confuses you so much you wont be able to sleep tonight. GET OVER IT!!!!!
This is when you put together the steps you built already. Easy enough.
Look at these pics to easily turn your shock absorber into a door stopper. Watch video for more info.
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