PETG Nozzle Wipe Tower

thingiverse

This STL can be added to a print in Prusa Slicer for any 0.2mm layer height print, and it will clean the nozzle of PETG gunk perfectly. I discovered that on repetitive larger prints, the PETG booger would consistently fall off in the same place, damaging the valuable print. So, I created an object that encourages boogers to fall off in it, saving your valuable print from damage. Think of it like a sacrificial booger tower. Prusa Slicer often overextrudes narrow sections of 100% rectilinear infill due to overlapping with perimeters, possibly causing PETG to climb up the nozzle. This issue also means that as the nozzle moves in a line, an already gunked PETG is dragged off. Although it's not perfect, this tends to be enough so that when a booger falls off, it does so safely in the tower. The tower is designed with a solid track of 100% infill and strategically placed gaps. Without these gaps, the tracks overflow and will eventually cause a nozzle crash. This is why the gaps are essential for the tower's functionality. This STL works only for 0.2mm layer height prints and requires special settings in Prusa Slicer. The required settings include 100% rectilinear infill, a bridge flow rate of 1, and a bridge layer direction/angle of 45 degrees. All other settings can be left at their default values, which are set to 0.2mm Speed.