So I'm two hours into a large 30 hour print and I noticed the small lever on top of the extruder (See Pic) had worked it's way about halfway over to the unlocked position. I paused it and locked it back. About ten minutes later it did it again. This will cause it to under extrude if it's not all the way in the locked position. I come back 30 minutes later. Same thing.
Nope. But I had read about it before so I zip-tied mine locked, I have lots of small zip ties. Have you taken the extruder apart to see how the mechanism works? I did post some pics of a disassembled one if that saves you some time and energy!
Got the new updated extruder mechanism from Creality finally. It looks like there is a spring mechanism inside pushing the two gears together. Iāts pretty small and I canāt see really good close up to tellā¦
Maybe wonāt have to put the zip tie on any moreā¦
Hey thanks. I downloaded it and will check it out next chance I get. You know the latest extruder Creality sent me in the Power Boost kit has a different setup for the filament and it doesnāt unlock the extruder any more. Works pretty good. Doesnāt have that little blue locking tab.
A few months later: I purchased a K1 and took delivery on 1/3/2024, printed for 3.5 days but today the extruder became intermittent. When the print would start the left-side warm-up line would start very thin and after it returned to the top it left a steamer of filament toward the start of the print, when it started printing the object the filament was changing size from thin to thick and leaving floating streamers. I retracted the filament and checked the nozzle and filament path, both were good. I removed the extruder and disassembled it, it was full of chewed up filament. I cleaned the mess up then removed the filament tube from the cable guide, every time I changed filament I had to fight pushing the filament pass the 90Ā° turn into the extruder, not anymore. Iām adding a raiser with a hinged cover holder, there be plenty of room for the filament tube.
It took a couple of weeks but I finally had to change the extruder, while trying to unplug the extruder the āLOCKā lever was not un-locked and I marred the grears. The new extruder has a white, spring loaded, retainer so I guess it is the latest version, the one I removed was the flat color with a black retainer that required a clip. I did discover that my build plate was not at the temperature showing on the printer, it was about 17Ā° lower, by adding that to the bed temperature my parts started sticking to the bed without issues and everything looks very smooth. After three days Iāve not had to abort a job to clean up a spaghetti filament mess.