Problems with PVA PrimaSelcet retraction
i need some help. i have problems with PVA filament. the thing just doesn´t want to retract. after printing the first layer it always stays in extruted until MMU error comes out.
anyone with simiral problem?
Thanks in advance for any help
Did you dry the PVA before/during use? Moist PVA will easily get grinded by the gears what will result in a blockage.
Yes i did, its dry.
but most interesting thing is, when i use the function filament unload it retracts normaly. But when I start to print a model it just stays blocked in extruder after the first layer.
I belive my problems lays in Filament Sensor. Sometimes when the filament(PVA) is inside the extruder it just shows 0, after i reset the printer.
When i tried to test the sensor with allen key or with some ends of other filament (also tried it with PVA) it always works perfectlly. it always turn to 1.