We're in the process of 3D printing headbands for face shields to donate to hospitals. We're stacking the models vertically in order to print 24hrs straight without user intervention to maximize our printing, as these prints are needed urgently. However, every third row in the stack has loose filaments that makes it a defect. In those layers, the first few slices of filament become loose at specific locations and gradually this effect lessens until halfway through that piece, then the top half prints ok (see attached image below).
We changed so many settings, but yet the effect is