New belt tighteners ++

Fenrir is my open-source, enclosed CoreXY 3D printer; this September 2023 update adds belt tighteners for the NEMA 14 A/B motors, inspired by the Voron V0 design, after the printer was resized.

Download and status (October 2026): Fenrir has changed a lot since this post. For the current design, see the Fenrir CoreXY 3D printer wiki and the previous update, Fenrir is getting beefy.

I got a few hours in today as well. 

Today I focused on belt tighteners, since I now have room for them, after the rework I did yesterday. They are inspired by what I recalled about the tighteners for the Voron V0 Nema14 stepper motors since I liked that solution.

I also did other smaller fixes after the resizing of the printer, and I'm happy with the progress I've had lately. 

I hope everyone has a great day!