First of all, if you are using Ultimate Blue PLA as your filament, it might explain some of your trouble. It's not the easiest one to get proper results with.
Another thing, commenting the photo you sent, you need to use one of the Allen (hex) keys delivered with your UM2 to tighten the bolt fixing the knurled bolt to the axle of the
thanks/ sorry for my english. it's part number 3? how much to spin? a litle o strong?
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3poro 9
First of all, if you are using Ultimate Blue PLA as your filament, it might explain some of your trouble. It's not the easiest one to get proper results with.
Another thing, commenting the photo you sent, you need to use one of the Allen (hex) keys delivered with your UM2 to tighten the bolt fixing the knurled bolt to the axle of the stepper motor.
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