MK4 Rear Filament Guide PTFE with PC4M10

This is a high rear fed filament guide using the print, two PC4-M10 couplers and a short length of PTFE tubing.  My 3KG filament spool is mounted behind and below the table.  I added this to minimize any friction and the spool is a bit heavier than the standard 1KG.  Works great!

Modifications are as follows:  Original was 1000% larger than the build plate, and depending on the slicer would get resized incorrectly or just wouldn't load.  Exported and resized for exact top rail size with clearance for the nextruder.  I then resized and re-angled the holes to accommodate PC4-M10 fittings to provide the least resistance filament path.