Davinci Pro 1.0 Bowden tube to hotend fix

thingiverse

As I was unhappy with the way Davinci "designed" the entrance of the Bowden tube into the top of the hotend, I designed this to have a friction-free path of the filament within the Bowden tube. The idea is to move the double pneumatic coupler in the top of the hotend to a full vertical position and slip this thingy over the Bowden tube so it makes a smooth 90 degree curve. See the attached photo for the general idea. The original design where the double coupler is forded to the side makes the Bowden inside the hotend pinch the filament. Print results have improved considerably using this simple fix.