[[ UPDATED – new filament guide, centered better over the idler ]]
When printing particularly brittle filaments ( Carbon fiber, glass filled PLA, Metal Filled or Wood Filled PLA ) the filament tube often is the cause of filament breaking near the extruder.
I have attached two STL parts to improve the filament path. The first is an improved filament guide above the idler. You will need to replace the M3x12 bolt provided by Lulzbot with a longer one. I used a M3x20.
The second is a re-designed Filament idler for the Wade extruder. I seem to be having issues with Thingiverse setting the license wrong… I’ve emailed them to ask them to match the license for the original Wade parts ( GPL )
Print them at 0.35mm layer height, 78% infill, Line infill. ( first layer height 0.425 mm )
I used the following speed settings:
First layer speed : 35
Top/Bottom Speed : 40
Infill Speed : 100
Inner Perimeter Speed : 95
Outer Perimeter : 60
Small Perimeter Speed : 20
taz_6_filament_guide.stl (52.3 KB)
extruder_idler_16.stl (90.5 KB)