Thank you very much for this! I expended over 150 dollars trying to fix the under extrusion on my 3D printer and you solution was the only thing that fixed it. :)
I've been dealing with this issue for several weeks. My Mk 2.5 was effectively useless due to this problem. Thank you so much for putting this video together!
Just want to say this video seems to have solved a problem I've been dealing with for almost a year on and off. I ended up getting a ground shaft from McMaster-Carr and cutting it to a slightly longer length. My underextrusion problem went away isntantly. Thank you!!
I spent 2 days, changing everything, filament, extruder motor (twice), stepper drivers, Hotend... and the issue was a shaft that wasn't seated right. Your insight into the problem was a great help!
Wish I'd come across this sooner. Been dealing with the clicking extruder on my MK3S+ for a number of months now and couldn't print any PLA where it had worked perfectly before. PETG still worked thankfully and I think that's because it's a little bit softer compared to PLA. Was getting ready to buy a new extruder assembly as I had tried every other solution out there, but found your video on a whim. Removed my idler door and yep, the shaft holding the bondtech gear was pushed all the way to one end of the assembly so when the door was tightened it was causing the flex that pushed the gear out of alignment slightly, leading to the clicking/underextrusion/etc. Thanks again for finding this issue and putting the solution out there. Printed a new idler door that one of the other commenters posted which prevents any lateral shifting of the shaft holding the bondtech gear and that works great so far.
Dude this needs to be a sticky in the official Prusa forums. I spent 4 days trouble shooting until I found your video! Thank you thank you thank you!!!!!!
Omg thank you so much for sharing this solution! I had given up on my printer for more than an year after not finding anyway to fix this annoying issue. Your video was perfect, very thorough but still to the point!
This actually fixed it! This was a problem that developed, it worked fine before or could be adjusted with the screws but at one point it would just start clicking all the time with nothing fixing it. But this did it. Thanks very much for sharing.
Nice fix! I did this in the middle of a paused 30h print. My shaft was actually moved totally to the other end. Softly banging it to the middle and now it works flawlessly. THX!
thanks for sharing. for my particular use case i did have a loose idler shaft as you described, but i also had a loose bondtech gear on my steeper motor ie. the grub screw was not fastened down tight enough to the stepper motor to keep the bondtech gear from slipping on the shaft of the stepper motor.
Did not seem to apply for me. I checked, and the pin was pretty well centered, and I was unable to wiggle the gear around as demonstrated in the video. After re-assembling it was clicking immediately upon trying the first print. Moving on to examining the (brand new) PTFE tube.
I have clipping issue on small detailed print with lot of retraction movement. I'll check this out tonight and hope this is the root of the problem. Subscribed for the info and the german accent ;)
Thank you so much. Had this Problem since a Filamnetchange and thought of Nozzle etc. Did x-times coldpulls and had in mind that my gears had to be replaced.....THIS LITTLE STICK damn it xD
If the cold stuck filament can't be removed, you take the smallest allen key with plyers, heat it up with a lighter and introduce it via the top' it will melt the filament that will stick to it and come out as you withdraw the allen key.
I took my extruder apart. Broke the wire for the heater core. Bought the E3D hotend. All of that then I find this to be the fix. But I do love the Revo hotend at least.
It did not help in my case. I even exchanged the 3x20 mm pin to 2x24 mm. Interestingly, the printer always starts printing normally, but after a minute the problem begins. Any ideas? :(
Your bondtech gears seem different from mine? The shaft is long enough, but the bondtech gear is still extremely loose. The gear seems to be too big for the shaft I have? My mk3 was part of the first wave that was released.
Damn ... I was hoping so hard that this is also my problem. But I’ve changed the rod for a longer version and i still have the clicking issue. Especially when i use the variable layer higher future and it comes to this curious 0.07mm layer hight or on longer print times.
This problem was chasing me down for like 3 days! Thanks so much mate!!! Will be buying a perfect fitting cylinder pin soon to never encounter this problem again. Did you report this to Prusa? If not I will.
Seems like I ran into this issue after 2900 working hours. I'll try to cut a little bit longer rod from stainless steel to fix this problem permanently.
Thank you very much for this! I expended over 150 dollars trying to fix the under extrusion on my 3D printer and you solution was the only thing that fixed it. :)
You're the man! After taking my hotend apart 2 times and not fixing the clicking, I came across your video. Great job!
I've been dealing with this issue for several weeks. My Mk 2.5 was effectively useless due to this problem. Thank you so much for putting this video together!
Just want to say this video seems to have solved a problem I've been dealing with for almost a year on and off. I ended up getting a ground shaft from McMaster-Carr and cutting it to a slightly longer length. My underextrusion problem went away isntantly.
Thank you!!
I spent 2 days, changing everything, filament, extruder motor (twice), stepper drivers, Hotend... and the issue was a shaft that wasn't seated right. Your insight into the problem was a great help!
Wish I'd come across this sooner. Been dealing with the clicking extruder on my MK3S+ for a number of months now and couldn't print any PLA where it had worked perfectly before. PETG still worked thankfully and I think that's because it's a little bit softer compared to PLA. Was getting ready to buy a new extruder assembly as I had tried every other solution out there, but found your video on a whim.
Removed my idler door and yep, the shaft holding the bondtech gear was pushed all the way to one end of the assembly so when the door was tightened it was causing the flex that pushed the gear out of alignment slightly, leading to the clicking/underextrusion/etc. Thanks again for finding this issue and putting the solution out there. Printed a new idler door that one of the other commenters posted which prevents any lateral shifting of the shaft holding the bondtech gear and that works great so far.
Dude this needs to be a sticky in the official Prusa forums. I spent 4 days trouble shooting until I found your video! Thank you thank you thank you!!!!!!
Omg thank you so much for sharing this solution! I had given up on my printer for more than an year after not finding anyway to fix this annoying issue. Your video was perfect, very thorough but still to the point!
Oh my god, I was ready to buy a new extruder and this fixed it, from no extrusion to working just fine, thanks a lot!
This actually fixed it! This was a problem that developed, it worked fine before or could be adjusted with the screws but at one point it would just start clicking all the time with nothing fixing it. But this did it. Thanks very much for sharing.
Nice fix! I did this in the middle of a paused 30h print. My shaft was actually moved totally to the other end. Softly banging it to the middle and now it works flawlessly. THX!
Thank you!!! I went through exactly what you described, and was about to buy a whole new hot end (which would solve nothing) 🙏🙏🙏🙏🙏
Thanks for making this video. Exactly what I needed to see!
This is it! Exactly my problem, thank you so much! :D
Thankyou. That was exactly what was wrong with my mk3 (Factory assembled).
thanks for sharing. for my particular use case i did have a loose idler shaft as you described, but i also had a loose bondtech gear on my steeper motor ie. the grub screw was not fastened down tight enough to the stepper motor to keep the bondtech gear from slipping on the shaft of the stepper motor.
Interesting. I am having this problem after upgrading to MK2.5. I will inspect this for the possible cause! Thank you!
Did not seem to apply for me. I checked, and the pin was pretty well centered, and I was unable to wiggle the gear around as demonstrated in the video. After re-assembling it was clicking immediately upon trying the first print. Moving on to examining the (brand new) PTFE tube.
I have clipping issue on small detailed print with lot of retraction movement. I'll check this out tonight and hope this is the root of the problem. Subscribed for the info and the german accent ;)
Thank you so much for this perfect explanation !
Thank you so much. Had this Problem since a Filamnetchange and thought of Nozzle etc. Did x-times coldpulls and had in mind that my gears had to be replaced.....THIS LITTLE STICK damn it xD
If the cold stuck filament can't be removed, you take the smallest allen key with plyers, heat it up with a lighter and introduce it via the top' it will melt the filament that will stick to it and come out as you withdraw the allen key.
Good video, thumps up!, time to solve my extruder problem.
Thanks buddy, problem fixed....
I took my extruder apart. Broke the wire for the heater core. Bought the E3D hotend. All of that then I find this to be the fix. But I do love the Revo hotend at least.
I hope this is my problem. I'll give it a try. The clicking and print failures have been driving me insane.
Thank you so much! This solved it perfectly for me.
The change didn't last for me. After some months - problem has returned. Extrusion stops mid-print.
Thanks all the same for your great video.
I'm having the same issue, and did replicate your changes. However, I'm still having this issue.
Exactly like me. :( Still no solution.
And me. 3 weeks now... 🥵
Thanks a lot for your help, mate!
Thank you! I thought I did something wrong but now I see this is what the problem is. Any suggestions for where to get a longer shelf?
Thank you sooo much!!! worked for me
I need to try this
Thank you. That fixed my problem.
Thank you! This is very helpful.
It did not help in my case. I even exchanged the 3x20 mm pin to 2x24 mm. Interestingly, the printer always starts printing normally, but after a minute the problem begins. Any ideas? :(
Thanks you so much! You save my printer!!!!!
My problem too! Thank you!
Thank you!!!
Your bondtech gears seem different from mine? The shaft is long enough, but the bondtech gear is still extremely loose. The gear seems to be too big for the shaft I have? My mk3 was part of the first wave that was released.
Bless your soul.
Damn ... I was hoping so hard that this is also my problem. But I’ve changed the rod for a longer version and i still have the clicking issue. Especially when i use the variable layer higher future and it comes to this curious 0.07mm layer hight or on longer print times.
I had same issue, find out by myself after two days, exactly same thing. just recenter axe and it will work ok.
This problem was chasing me down for like 3 days! Thanks so much mate!!! Will be buying a perfect fitting cylinder pin soon to never encounter this problem again. Did you report this to Prusa? If not I will.
I did but they replied that the cilinder is not meant to go all the way in the holes and that I could use a bit of glue to keep it still... Meh
How do I do it for mk3s? Tutorial please
This ! This ! Thanks !!!!
Can you share the fusion 360 MK3 design?
Sure, it was this one: grabcad.com/library/prusa-i3-mk3-solidworks-1
Seems like I ran into this issue after 2900 working hours. I'll try to cut a little bit longer rod from stainless steel to fix this problem permanently.
dident you watch the vid by prusha he said its not a problem all fdm prints are like that
I try it, I experience the same issue.