MK4s extruder clicks intermittently
I am newbie to 3D printing. After assembling the MK4s kit, I was excited that everything was working great, everything was printing without issue. But after about 10 prints all of a sudden I started hearing a slight click in the extruder during printing. The print actually looked ok. But after completion, I unloaded the filament (Prusement Galaxy Grey PLA) and reloaded and while purging I would hear the same clicking noise. I have tried unloading and reloading the filament a few times but the clicking noise is still occurring. Any advice for a newbie would be greatly appreciated.
RE: MK4s extruder clicks intermittently
I tried cold pulling, but that did not resolve the issue. I tried tightening the idler, but still got the clicks and when I unload the PLA filament I noticed the tip being a little stripped. I tried loosening the idler and the clicking occurs a lot less than before. I do not see any issues in the print, but again I am a newbie so I may be missing issues with the print. But for now the click is a lot less and some times the whole print will happen with only a couple clicks and the clicks are not really loud. I am pretty sure I am messing something up for the long run.
RE: MK4s extruder clicks intermittently
I am having the same issue. id like to think i am experienced user , yet the only thing that helps is when i doing a purse after installing a material and use the copper pocker to like pop whatever blob is inside and then it comes out good ,
1st guess some type of heat creep
2, some nozzle inside tube defect
3, the most recent update , since that is the only thing ive changed since running it the last week
i may try an downgrade this weekend and retest again ,
i tested 3 petg rolls and all the same , only when i used the PLA it seems to happen less often .
RE: MK4s extruder clicks intermittently
saw on another post some issue , Disable the Stuck Filament check in the printer's LCD menu. is what ill try tonight ..
RE: MK4s extruder clicks intermittently
I have not noticed any clogging or flow inconsistencies that I can tell. I also tried disabling the Stuck filament setting like you stated but no change. I still get the intermittent clicking. I looked at the extruder by unlatching the idler and everything seems fine but. When I leave the idler unlatched and do a filament purge there is no clicking. But I cannot loosen the idler anymore than I already have, plus it clicks more when I loosen more than I have it set to currently. I might disassemble the extruder and make sure the PG gears are not the issue. 😶
RE: MK4s extruder clicks intermittently
damn i may need to do that , i am running PLA and no issue so far . going to try PETG again and additionally i read you can do re calibration of extruder gear may help to . post and pic when you get a chance if you notice anything sir
RE: MK4s extruder clicks intermittently
Did not get time this weekend but will try in the next few days. Will definitely add some pics. I will try the recalibrate the extruder first see if that helps. I also ordered some PETG from PRUSA so waiting for that to arrive and test with that as well.
RE: MK4s extruder clicks intermittently
I also found this in one of the forums :RE: Nextruder Clicking noise
The clicking comes from the Nylon Filament in the Cable harness of the extruder. I forgot to tighten it and the filament was slipped out of the X carriage.
I will also check this first. I am hoping this is the issue, because I remember when assembling the printer, the my nylon filament did not come with the ends pre bent. So I tried bending it myself, and I was worried it may slip out. So manually moved the extruder on the X axis and sure enough i heard a little click from the cable harness. I may see if I can get this from slipping and see if the clicking stops.
RE: MK4s extruder clicks intermittently
So I checked the alignment via the idler and everything seemed ok, so before disassembling the extruder to check the gears I re-ran the gear calibration and loosened the extruder and tightened as instructed during the test and I have ran a couple prints so far and for now I do not hear the intermittent click anymore.
RE: MK4s extruder clicks intermittently
thank you i remember reading about that it someone else testing , i will try that next , i thought it was temp related , yet was going to do a temp tower , additionally i pop my nozzle after i load a filament and it bursts and than works, yet of course to me mine seem heat creep related , because it failed a rough hr into on 3 different prints.
RE: MK4s extruder clicks intermittently
i am realizing it was related to heat creep , as i did 3 other prints the same day and had the jam at the same time , did a simple bed leveling test to find out it could not even complete that , raized the z and the temp and fixed 90% of my issues , doing a test print now to see if it will be successful
RE:
Clicking inside the extruder - the resistance inside of the nozzle is higher than the pushing force. The visible symptom is the dent on the filament.
Possible reasons :
- the nozzle temperature is low, so the filament is not melting sufficiently at the nozzle tip which represents too high resistance - increase the temperature -
a) filament melting of the same filament type (e.g PLA) can differ per producer
b) the real nozzle temperature is lower than shown on display
- insufficient idler springs tension resulting in Insufficient filament pressure against the extruder's gear. screw the idler screws by 1/4 of the turn
- during the filament load with the lower melting temperature (let say PLA) than the previous unloaded filament melting temperature (e.g. PETG) , the remains of the previous one do not melt and do not allow the new filament to go through - load the new (PLA) as PETG, unload and then load it again as PLA.
