Parametric Thumbwheel

by 67restomodder, published

Parametric Thumbwheel by 67restomodder Nov 21, 2011
7 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



BSD License
Parametric Thumbwheel by 67restomodder is licensed under the BSD License license.

Liked By

View All

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

10505Views 2272Downloads


I am upgrading the build platform on my Prusa and liked the thumbwheels from HBP Quick Leveler Redux, but I needed some to fit M4 nuts. So I decided to write a parametric OpenSCAD script to make thumbwheels of any size. The included stl is for an M4 nut.


If you need M4 thumbwheels, use the included stl and make as many as you need using multiply in skeinforge. If you need a different size, download the .scad file and have fun. I included lots of comments to hopefully make it easy.

All Apps

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

Treatstock is an online platform that offers decentralized manufacturing services such as 3D printing and CNC machining for business-to-business and business-to-consumer sales all over the world. W...

App Info Launch App

3D print your favourite design with NinjaPrototype, a professional 3D manufacture with consistent quality and speed.

App Info Launch App

Just had a look at your script and your method for creating captive nuts is interesting but I wanted to let you know there is an easier way. If you create a cylinder with 6 facets and a radius of the nuts width across the flats divided by the square root of 3 you will have a hexagon the correct size! So in openscad this might look like the following:


An m4 nut is 7mm across the flats so if you add a little, maybe 0.25 or 0.5, and divide that by sqrt(3) you end up with a good captive nut size.


I like your suggestion and tried something similar after I wrote this little script. Interestingly enough, I did not invent the hexagon method found in my script: I copied it out of the Prusa Mendel OpenSCAD source. =-O