Completely 3D Printed Catapult with ratcheting winch
thingiverse
Here is a fully 3D Printable Mini Catapult for your desk! 5 parts: Throwing arm Ratchet gear Ratchet outer Crank Handle and Frame Some parts may have to be sanded down to fit together depending on the quality of your print. I recommend printing it at 50% size for the best time to size to output ratio. Happy to answer any questions and if you would like it printed visit my 3D HUB (attached below) https://www.3dhubs.com/chicago/hubs/kwallnation
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