2 Cylinder Air Engine WORKING model 3D print model

cgtrader

Disclaimer: Don't even think about attempting this unless you're an experienced builder with nerves of steel or a solid grasp on the fundamentals. This contraption runs on compressed air and packs a pair of mighty cylinders. I slapped it together as a hare-brained project during a moment of idle desperation, but lo and behold, it actually worked – against all odds. You'll need to rustle up some extra fasteners to finish this build, not to mention the sandpaper and lubricant that I wholeheartedly endorse. Don't bother with low-quality hardware; go for the good stuff! Required Fasteners: 1/4" 20 bolts: get eight of them – all one inch long. 2-inch-long 1/4" 20 bolts: you'll need four of those bad boys. 8 threaded nuts: size 1/4" 20. Can't stress this enough – use the right stuff! Oh, and here's the thing: this project calls for three trusty ball bearings. You can either track down a pack or scrounge up three from a fidget spinner (they come in packs of eight). Don't worry about the type; 608 bearings will do the trick. When you're tightening those bolts, be sure to break out your trustiest wrench. Trust me – you'll need it.