For over 200 years, people have been harassing the power of compressed air for mechanical movement. This week, Instructables user DesktopWorkshop has released a recipe for 3D printing a pneumatic motor, complete with the tutorial for its creation. The primary uses of pneumatics have been in handheld tools and mining equipment (where traditional combustion engines create a hazard), but that hasn't meant that there haven't been the occasional train or submarine using them either. So, dream big and follow the careful steps laid out in the tutorial and who knows what you could be moving next! Check out more about this technique: http://3dprint.com/75175/3d-printed-pneumatic-motor/