CR-10 V3 filament guide with flanged bearings
thingiverse
This is a filament guide for the cr10 v3 that allows the use of bearings to guide the filament into the sensor without much/any friction. I used some flanged bearings I had around. When printing the pins, I suggest you scale it to 98-99% in the slicer to make it fit. You'll have to use longer screws than the original ones to mount it to the metal frame.
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