Penny Catapult modified to use spring
thingiverse
I made some improvements to this model by adding a 6 millimeter hole so it can pivot easily and a 2 millimeter hole to secure a spring tightly. This creative project was designed using Tinkercad's user-friendly online interface. Edit and customize the design at https://www.tinkercad.com/things/q7KdPcC8xRl
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