GEEETech i3B/C/X: MK8 Refurbished Feeder

Hi,
at begin my GEEETech Pro i3B was come with “old fashion” metal feeder MK8, but last year I’ve update my i3B to i3C adding the second MK8, and I’ve get the new, black, plastic MK8, and a spare black feeder in order to have both extruder with the same feeder.
The new feeder have lot of nice, beautiful enhancements compared to old metal one, mains two are the easy filament insertion and the separation from barrel mounting block and MK8 itself, this last characteristic enable the unmounts of the MK8 from the printer without unmounts also the barrel and the extruder itself, in this way if you have a block in the barrel or in the nozzle you can easily unmounts the MK8, use the tool to push away the block and remount the MK8 without loose the alignment between the two nozzle, I love this option!
But the new feeder do not have the regulation for pre-load spring, and this can be a big issue with bad filaments!
To solve this issue I’ve redesign the feeder in order to integrate also in the new design this regulation, and it work!
I’ve start from original GEEETech design, copied with lot of patience and tricks, I have close both bottom and top in order to have something more strong, original injected parts are for sure stronger than any printed ones!
The pin where mount the bearing wheel cannot be strong enough if printed, so I’ve replaced with a screw, M3x10… I’ve also choose to use PTFE tube to ensure a quite filament movement.

Warning, part #5 have a log bridge, near 40mm, if your printer cannot afford this kind of bridge use support!

IF YOU “FALL IN LOVE” OF THIS DESIGN, PLEASE, REMEMBER THAT IT TAKE TIME TO BE CREATED, DESIGNED AND SHARED… SO “MAYBE” YOU CAN USE THE “TIP DESIGNED” BUTTON ON MY PROFILE!