Make a Balloon Flinging Siege Weapon – Make: PDFcast
The Make: PDFcast this week is an excerpt from William’s bok The Art of the Catapult. Download the pdf to get the detailed instructions to make this siege weapon. PDF Link
This flinging machine is optimized for water balloons, but we used a small plastic cow. Subscribe in itunes to get both the video and pdf downloaded automatically! – Link
Whats the name of the molecule? Is it a hormone?