what causes pla stringing
PLA stringing and PETG stringing are especially common due to the nature and low viscosity of the material when molten. However, as you'll read this is easily remedied when using filament of a good, reliable quality. Here are the 3 causes of your prints stringing or nozzle oozing. Your symptoms may be caused by one or all of these, so it's worth trying each out (in order) to diagnose the problem. While 3D print stringing is not the direct effect of over extrusion in 3D printing, they are related symptoms.