I have been experimenting lately with other than the standard pla or abs filaments. I have been innundated with filament jams, mostly of my own making. The problem has been the issue of separating the extruder from the printer due to the new steel guide that directs the filament to the switch just as it enters the hot end. I have had to remove the front plate, the one with the "Don't touch " label several times to access the filament below the guide to cut it. Today I finally gave in, and using an xacto knife, and dremel tool cut an access hole through the front plate label, which allows me to cut the filament below the steel guide and remove the extruder head, no tools required. No more fooling around with 3 mm nuts and #10 torx screws.