After looking around for a filament guide and didn't find any that fit my requirement a designed my own. It is design to work well with the filament spool holder linked below: https://www.thingiverse.com/thing:4463794 Haven't test how well it works without the filament spool holder.

Assembly This filament guide is mounted on top of one of the Y-axel pillars with four M4x10 screws.

Known problems One issue I seen on previous versions is that the filament string can leave cut marks after a while in to the filament guide. I have increased the angle on the hole thru the filament guide in the last version and hope that will solve the problem.

Update 2020-09-08 Added guide that will fit Snapmaker enclosure

Update 2022-01-23 Added mirrored models

Update 2023-10-22 Added version 2 with better support in Z-direction Removed mirror version, possible to do in tool