MK8 Filament guide
thingiverse
Guide the filament carefully into the MK8 extruder, ensuring a smooth fit without undoing the tension screw. This clamp fits snugly around the end of the block. Next, heat up the hot end until it's ready, then remove the filament once it reaches temperature. Take out the cooling fan and insert this part while the fan is out of place. After putting the cooling fan back in its rightful spot, add more filament to complete the process.
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