Open-source & Modifications


Sienci Labs is dedicated to growing the maker community and advancing the development of open-source automated manufacturing technologies. Because of our vision, designs for the Mill One are open for anyone to use.

We encourage makers around the world to use our designs and ideas to modify existing Mill Ones and even build their own from scratch. Check out the resources available below for files, instructions, and other information.

We sell parts and kits for our machines, and we work hard to make our designs available for everyone. Consider supporting us by purchasing parts on our store.

Looking for help or need other resources, feel free to reach out!


Find 3D printable parts for the Mill One on our Thingiverse page as well as design files, sample gcode, STLs, and other initialization info.


Find photos, links, downloadable designs files, and manufacturing tips.


Version 2 Design

Version 3 Design

Onshape is a powerful browser-based CAD software. Explore our design changes live. For the latest design files, or if you want to modify the design, visit our project on Onshape. These design files change constantly and may be inconsistent at times, but typically have the new improvements.

Bill of Materials

Google Sheets file on Google Drive with the bill of materials.

Community Contributions

Here are some other contributions for modifying or upgrading your Mill One:

-> Add Homing Switches to a Sienci Mill One CNC by Troy Barbour
-> Sienci Mill One Air/Oil Mist Coolant System by Andrey Gubanov
-> CNC Hero! Guitar-ify Your CNC Machine by Chris Thorogood
-> PDF Files for the Mill One Frame by Chris Zindrik (Files can be found in the Facebook group files and also on our Thingiverse)
-> 3D Printable Mods by Tom Sanladerer
-> Add an Arduino-based Optical Tachometer to a CNC Router by Troy Barbour
-> Easy Z Probe for you CNC Router by Troy Barbour
-> Add a Laser Guide to your Sienci Mill One Router by Troy Barbour
-> Sienci Mill – Angle Mount – 4 holes by M1kka
-> 52mm Spindle Bracket for Sienci Mill One by Matty812004