Topic: e3dv6 nozzle clogging
Hi folks,
I have a folger 2020 with an e3dv6 3mm hotend. Printing with chi mei pa 747 abs filament made with a filastruder. (Using the same filament in another printer and it works great)
Using the 0.4mm nozzle that comes with the e3dv6, but it clogged the other day and has clogged several times since trying to unclog it.
First time I did the guitar string flossing method as usual. This has almost always worked for unclogging. Seemed to work, and printed fine for an hour, but then clogged again. It does not clog on the first layer, rather it clogs toward the middle of a print. Printing only calibration cubes at this point.
Second time, I disassemble the whole thing and soaked the nozzle in acetone for a week. However, looking at the wide end of the nozzle, there was some plastic still stuck in there that I was unable to remove with needle nose pliers and that didn't dissolve. I screwed the nozzle back in and did the guitar string method again. Felt like it was completely unclogged. However, same issue. Printed for about two hours but then clogged again.
Third time, did the same method as before, simply because I had no other ideas. Same crap, it clogged after an hour. After clearing the nozzle and reloading with filament, I'll usually push 200mm or so through into empty space to confirm that yes, in fact, the nozzle is clogged. This time I tried turning the big gear by hand to try and push freshly loaded filament through, and it felt quite difficult. (once the filament reached the nozzle) It almost felt like the hobbled bolt was about to "skip". If you have had this happen, you know what I'm talking about. In any case, it's not the hobbled bolt or the extruder's fault as far as I can tell. It feels quite difficult to push the filament through by hand. My other printer, which had the exact same extruder, hotend, and nozzle size for years never had that problem. It has always been quite easy to turn the big gear by hand and push some filament out the nozzle.
I have a gut feeling that if I could get some sort of strong acid to completely dissolve the plastic left in the nozzle, I would be golden, but right now I have wasted two weeks on this and am out of ideas
Keep in mind that this nozzle has been in operation for maybe 100 hours of printing at the most. It should not be jamming like this already.
Any help is greatly appreciated!
Thanks!!