Skip to content

Air motor, printed fully assembled, ready-to-use

Creation quality: 5.0/5 (6 votes)
Evaluation of members on the printability, utility, level of detail, etc.


3D model description

World's first workable engine that can be printed fully assembled (no supports, print-in-place)
Engine is powered by mouth breath.

Please see this short video:

or this video of my friend:

Wow! 5x size engine! Thank you, Joel, amazing giant printing!

Just print it. And it works!
Simple but effective. Power and beauty. 14 secrets of technology

Checkout my other designs,

Engine is 'J' (Juliett) by my classification. Please see my next engine: two-cylinder engine 'Lima-4'. It is more beautiful and more cool steampunk souvenir. And it can be powered not only by mouth breath, but by shower water (1/2 inch connector):

Here is comparison of PLA and PLA+ motors:

3D printing settings

Easy print

0.2 mm layer height;
40 % filling;
20-50 mm/sec printing speed;
PLA works great.

Rotate the propeller 30-100 times after printing (for self-cleaning);

I print by cheapest 3d printer t220s, so your engine should be more accurate if your printer is better.

3D printer file information

  • Design number: 617123
  • 3D design format: STL Folder details Close
    • Steam engine Juliett_fixed.stl

    Learn more about the formats

  • 3D model size: X 69.7 × Y 108 × Z 56.7 mm
  • Publication date: 2022-01-23 at 19:37


CULTS - Private Use


Issue with this design? Report a problem.

Collection associated with this 3D model

Best 3D printer files of the Phones & tablets category

Best sellers of the category Phones & tablets

Add a comment


Would you like to support Cults?

You like Cults and you want to help us continue the adventure independently? Please note that we are a small team of 3 people, therefore it is very simple to support us to maintain the activity and create future developments. Here are 4 solutions accessible to all:

  • ADVERTISING: Disable your banner blocker (AdBlock, …) and click on our banner ads.

  • AFFILIATION: Make your purchases online by clicking on our affiliate links here Amazon.

  • DONATE: If you want, you can make a donation via Ko-Fi 💜.

  • WORD OF MOUTH: Invite your friends to come, discover the platform and the magnificent 3D files shared by the community!

100% secure payment with PayPal or Credit Card.