Piston Engine Mechanical Sculpture (With Dual Stage Fan and Double Helical Gears)

View the following link for video demo. 

View 10-step assembly guide in photos.

Post your makes! Seeing your prints is my main motivator for posting models!

Design intended for .4mm nozzle and ≤.3mm layer height. 

Support material ONLY on the hand crank.

Sleeve A is slightly shorter than sleeve B.

Journal A is shorter than journal C.