I found this kind of spool holder at:
https://www.youmagine.com/designs/k8400-spool-holder-incllined-slot
After printing and installing it, I figured out, that the filament is to close to my modified extruder (designed by Cinya), depending of the spool itself. Some spools have been ok, some not.
So I move the holes for the screws from the end to the front to have the spool holder more off the extruder.
UPDATE: V1.1 got bigger screw holes, since the V1.0 screw holes are a little to small
k8400-spool-holder-left-mod.stl | 2.2MB | |
k8400-spool-holder-left-mod_V1_1.stl | 1.2MB |