Have us print this for you
PLA from £6 inc. UK delivery on letter-sized prints. We slice, print on a calibrated Creality K2 / Bambu A1, QC and post.
***
**Oye! Oye!**
[Brenda the articulated battle tardigrade](http://bit.ly/1W8W1Ag) has been released into the wilds of 3D printing!
[Join the Horde](http://horde.zheng3.com) to be among the first humanoids to learn about the next epic project from Zheng Labs!
*We now return you to your regular model description.*
***
http://www.zheng3.com/2012/05/15/the-penny-catapult/
Here's a basic torsion catapult. It uses one or more elastic bands to launch a U.S. penny if you print it at 1:1 scale. You probably won't get enough torque to be impressive with fewer than 3 bands.
Penny not included!
***
