3D Model Files Available for download?

I noticed while building my new WorkBee, there are a few 3d printed parts used ie the duet controller case, stepper motor end caps, limit switch mount, Mafell mounts etc and was hoping in the spirit of open source, I could download the 3d model files used?, so I could print replacements if needed, perhaps modify to accommodate other thoughts and ideas, or simply to make those from a different colour?

Cheers