I just ran into this really cool video about how to build a catapult out of PVC piping.
Here's the book mentioned in the video: Click on the picture to order the book from Amazon.com.
Click here to see a catalog of catapult kits.
Here's the book mentioned in the video: Click on the picture to order the book from Amazon.com.
Click here to see a catalog of catapult kits.
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