X Belt Tensioner - Ender 3 V2 Neo

Increases visibility and access to the X axis belt idler to check for alignment or shimming.
For Ender 3 V2 Neo (and possibly Ender 3 S1 )

Includes two inner parts for long or short belts. I recommend printing both and checking which one fits better. 

Note: The Stiff version inner tensioner is much harder to insert into the outer case. Printing it in anything other than PETG will break.

I've been running the normal version with 5k accelerations since the first release and I didn't have any problems with tension/knob slipping or any misalignment, or part creep.

Remixed from - Minimalist Ender 3 X Axis Tensioner by sapencil

Updates:

06 04 2023: Added a stiff version. Take note that the inner tensioner is much harder to insert into the outer case.

24 03 2023: Included a 2.2mm spacer for the turning knob for smoother movement.

Print:

PETG
100% infill
Some supports

Hardware:

Reuses existing hardware + 2xM4 hex nuts

Installation:

-Insert a M4 hex into the inner part that holds the tensioning screw. (It's easier to attach the hex onto a screw first then guide it in)

- Spread the main body apart from the end that attaches to the X gantry, and slide the inner part inside. Once it's in you probably can't take it out again. PETG stretches well and I never had an issue breaking the part. 

-Add the second M4 hex on the side and insert the idler bearings. 
-Secure assembly onto the gantry using the existing M3 screw.
-Add tensioner screw with knob, or an M4 screw for the stealth/minimalistic version
-Loop the belt around the idler.