Can I 3D print my own parts for the LongMill?

Yes, we provide all of the design files on our Open Source Resources. All of our files are on Onshape, which means that you may need to export them as STL files directly from our project files. You can also find more details about our printing settings here: https://sienci.com/2019/11/11/3d-printing-settings-for-longmill-parts/