Neptune 4PRO X Axis Linear Rail Mod

Still in progress !!
Works with a few tweaks.

Conversion from the factory rail with rollers to a 300mm KGN15 rail with MGN15H carriage.

V3:

Same issues as V2.
Added spacer for printhead (Druk X 5) Best to print in TPU.
Small tweaks to all parts.
There is no need to cut out some fragments on left belt guide and endstop adapter.
 

V2:

Known issues:
Y axis is ~15mm of. 
X axis is ~5mm of.
The purge line can be off the bed depending on start gcode. 
Tinkering with limit switch will probably help.


Printing without supports.
I used transparent PET-G with 100% infill, trying to get the glass look but it didn't work.

Only the carriage  must be durable/stiff with higher thermal resistance.

Necessary things:
  -T-Slot profile 20x20x360mm (the original from Elegoo N4Pro is incompatible)
  -2x Roller with bearings GT2 20T 5mm
  -MGN15H carriage
  -300mm Rail KGN15
  -1000mm Belt 6mm
  -Invert X axis Stepper Motor Direction.

The simplest way is in printer.cfg change [stepper_x] from dir_pin:PC13 to dir_pin:!PC13 
Also change the position of the limit switch