Fri, 24 May 2013 11:31:08 GMT Ponoko - All items tagged with physics http://assets.ponoko.com/showroom/DansShowcase/8402 This fully adjustable rubber band powered ping pong cannon is sure to provide hours of entertainment. My classmates and I would launch ping pong balls from the third story balcony into a trashcan several yards below. It's surprisingly accurate and a whole lot of fun. The given tolerance works out well and provides a smooth axes of rotation. The only things you really need yourself are rubber bands, ping-pong balls, and something to latch onto the rubber band. I just bend a small piece of weld bar. It seems to work rather nicely. Right now I've retired my cannon and am currently using it as a stylish pen holder at work. <br></br><img alt="Cannon2_showroom_image" src="http://static2.ponoko.com/design_images/images/66642/b0a48288-edff-e59d-2249-3612cdacdbe0/cannon2_showroom_image.jpg?1343248586" /> Thu, 11 Apr 2013 16:38:09 GMT http://assets.ponoko.com/showroom/DansShowcase/8402?time=Wed+Jul+25+20%3A29%3A53+UTC+2012 DansShowcase http://www.ponoko.com/showroom/AGBDesign/9733 Cardboard mobiles - so far, only for testing. Asymmetrical assemblies should stand straight...<br></br><img alt="Physics_showroom_image" src="http://static1.ponoko.com/design_images/images/81447/5bc721fc-8d2c-d327-e596-e01c41db5e24/physics_showroom_image.png?1363800033" /> Wed, 20 Mar 2013 17:20:45 GMT http://www.ponoko.com/showroom/AGBDesign/9733?time=Wed+Mar+20+17%3A18%3A19+UTC+2013 AGBDesign