Air Engine

Are you still not being taken seriously when you travel because you can't talk about the world?

Are you still blushing in the KTV because you can't hit the high notes?

Are you still struggling to keep up with the group when you go hiking because you're out of breath? What are you waiting for!!! Download this model immediately, all you need is a 12mm diameter main shaft bearing, plus a must-have m3*8 bolt*1, m3*16 bolt*2, other m3 bolts can be chosen as you please.

I have personally tested it, it can blow super hard, it can spin super fast, with it, your lung capacity will break 10,000 in minutes; with it, your phone will charge in minutes, your neighbor uses it to generate electricity, and the village relies on it to roll noodles, blow one breath, rotate one circle! Circle, circle, circle!

Precautions:

I use a third-party PLA material that costs about 20 yuan, so the tolerance is set to 0.2 mm, which does not affect the rotation and does not affect the air tightness too much. If you have photopolymerizable resin, you can reduce this tolerance. The notch of the intake baffle is strongly related to the position of the piston. See the picture for details. The lower dead center of the piston must close the valve exactly!!! Very important, do not tighten the bolts on the crankshaft too tightly, it won't turn! Finally, if the nozzle leaks, cut a pad and add it yourself, or just blow the rear chamber of the crankshaft without a nozzle, adjust the engine before tightening the nozzle.