Flexi-Fil Extruder Tip and Nut
thingiverse
I combined two concepts I liked and it's printing now, so I haven't tried it yet, but I think it will work great. Fingers crossed! Thanks to everyone for their hard work. I'm not sure how to give credit to both of them at once, so I'll do it here. Credit goes to: Mc_KaNaN - Flex Adapter CR-10 (https://www.thingiverse.com/thing:2733612) cigp - CR-10 Extruder with NUT and PTFE insert (https://www.thingiverse.com/thing:2298697) M6 Nut fits perfectly on the coupling, so run out to Lowe's and get some!
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