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How to Build a Catapult

Step 9Fitting the Arm

Fitting the Arm

This is easy - just slide the arm into the Rotating Arm Holder and put the carriage bolts through the holes you drilled already.

The best part about having a Rotating Arm Holder is that you can easily change arms within a few minutes.

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T3h_Muffinator (olopede)

I'm a just a not-so-average human with a passion for making. I see a world of hackers, makers, and producers as the sun rises in the near future. I'm starting olopede, an educational electronics k...