Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!


by connors934, published

Propellers! by connors934 May 24, 2011
4 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Propellers! by connors934 is licensed under the Creative Commons - Attribution license.

Use This Project

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

7884Views 2998Downloads


Propellers are neat things that you can attach to motors. When they turn, they create a pressure difference on the front/back of the blade. The front has high pressure, and the back has low pressure.

These are done in Sketchup using a technique that I am developing. Each blade is 120 degrees from the others. The profile is extruded up 1/16" and then the top edge is rotated on the center point. The new top edge is then extruded again 1/16" and rotated by the same number of degrees. There is a line through the center to help locate the rotation point. This line would also be useful for placing a hole to accomodate a motor or other post.

This design would be good to print and then make a mold of so you could make lots of propellers for underwater robots or airplanes or similar.

After printing a few versions, it appears that the props need to have a steeper angle for proper Makerbotting. This will reduce the overhang, but will likely also require a taller blade to get enough surface area on the blades.

If the profile of the blade is 1/16th of an inch, it seems to print neater and faster with abs. The included g code is based on MK5 with automated build platform. Having the angle too steep also makes for a sloppy print with lots of loops and drips. The three holes will allow the prop to be bolted onto a laser cut acrylic motor adapter.


Print it out and see how well it works.

You will need to make a center hub for attaching it to the rotational device of your choice.

This is a very new design and technique, so mess with it and share your results!

All Apps

3D Print your file with 3D Hubs, the world’s largest online marketplace for 3D printing services.

App Info Launch App

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

3D Print a wide range of designs with Treatstock. Easy to use tools to get the perfect result. The global 3D printing network that connects you with high-quality and fast working print services nea...

App Info Launch App

Nice! I tried something similar in OpenSCAD and it worked really well:


You can even scale the layers to get a more rounded propeller blade. :-)

Extrude-Scale by Function: Propeller
by syvwlch

That's a nice design. I've been looking for prop files to download and haven't found anything that suits my needs. After a lot of messing around in Sketchup, I tried Solidworks and came back to Sketchup.

Where I was extruding it up 1/2 inch in Sketchup and then rotating it, this time I extruded it a little, rotated a little, repeat, repeat, repeat.

It took about three hours today to develop the technique, but now I can do it in about 5 minutes from a blank file. Exporting the .stl is pretty effo
rtless and quick.