Ender 3 Lead Screw Mount and Top Bearing Support to solve Z-Banding

If after installing my “Z-Axis Stepper Motor Mount with integrated Axial Thrust bearing” mod, you still have Z banding on your E3, this should fix any remaining issues.

These mounts allow the correct vertical motion to be obtained while isolating lead-screw wobble on the X and Y axis. This design works on a very similar principal to the WobbleX system by MirageC, however it’s fully 3D printable.
 

The Top Bearing mounts hold the Lead-screw in the correct location to ensure the wobble is controlled.

 This system is compatible with both dual and single lead-screw Ender 3’s.

Prerequisites:

• Standard T8 lead-screw with Anti-backlash nuts (no point to keeping the old nuts, and they don't fit this design)
• Original Creality Extruder has been relocated or replaced with Direct drive - these mounts are not compatible due to space constraints
• 608 Bearings for the top lead screw Supports
• M4 T-nuts and bolts for the top bearing blocks
• M3 bolts for each Lead-screw nut.

I recommend printing the items as shown in the pic, so any bridging is only done for the top section, which is less important to be perfect. 

Installation:

• The Lead Screw mounts install using the existing holes and bolts in the lead screw mount. 
• Solid Compression couplers for the Lead screw / Stepper Motor (Flexible couplers introduce their own z-wobble)
• You only need 2 M3 Screws to mount the new Lead-screw with anti-backlash nuts and they install diagonally opposite each other.
• You may need to adjust your bed height and Z-end stop depending on configuration. If you have issues with the X gantry not being able to get close enough to the bed, you may need to install the mounts on top of the Aluminium frame, upside down (it'll work perfectly in either orientation).

Thanks to MirageC for making the top bearing support and FourEight4 for the Flexure design.

My CAD file has been included for remixing etc.