Ender 3 Filament Guide Block

Designed this filament guide block which also prevents the filament touching the Z-axis leadscrew and as a nice bonus it makes loading filament easier too.

The block is a perfect fit for the top of the Z-axis leadscrew guide plate and allows the use of existing screws and split washers. Just remember to leave the screws a little loose to prevent the Z-axis leadscrew binding. This is Creality original design intent and not due to the guide block itself.

I printed this with the 'filament exit face' down and it printed very nicely.

UPDATE: I've modified the design and will now print using a 0.4mm nozzle without creating a hole in the Z-screw side wall and is compatible with stock and alloy extruders.

Photos of block printed using PETG+ and 0.4mm nozzle. Apologies for the fairly poor quality print but I've not had chance to tweak the CURA profile yet....

22-03-19 Modified internal blend to aid loading of filament and increase strength of part.