Just Another V6 Hotend Fix

thingiverse

A variation on the capped PTFE tube fix for Creality V6 Hotends (and their clones). These all-metal hotends actually rely on passing a short length of PTFE through to the heated block where it butts up against the nozzle. As the machine operates, the bowden tube can slowly lift up a few fractions of a millimeter which in turn is quickly filled with plastic, and that leads to clogs and ... you get the picture. This design differs from the others I've seen because it has a small pocket on one side where the cut length of PTFE is inserted thus ensuring it's perfectly centered when inserted. My Ender 5 hotend required a 31mm piece of tube but it's best to start with a longer piece (16-20mm) and trim small amounts until it just protrudes into the heated block and hits the nozzle when it's screwed in (but not quite fully home). I won't duplicate the instructions from people like CHEP because they're better at it and have videos you can enjoy, for example: https://www.youtube.com/watch?v=7tCxO17XZtw The really important part is to cut the end that's going to be flush with the nozzle so that it's a straight slice. Scissors and side cutters won't (cough) cut it (cough) in this case so either a low-cost bowden tube cutter or a good eye and a box cutter are the orders of the day here. I made this one because out of the box my Ender 5 Pro (8-bit) clogged just 10 minutes into its first print, proving that even from new, this can be a problem; but maybe I was just unlucky?