About this 3D model

Description The top part has a 5mm thread (adjusted towards 4mm), you can screw in the bowden tube, and it's pretty tight. No need for a pneumatic connector like other designs. Inside, you can squeeze in a piece of sponge to clean the filament before it reaches the printer. The hole you need to make in the box has a diameter of 14mm Printing Import in slicer and split to objects. Print the top part upside down. Prints without supports