(HOW) I fixed the Ugly Layers on my 3D Printer
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- čas přidán 16. 05. 2024
- For the last two years, I had problems with inconsistent extrusions on my CETUS MK3. With this simple fix, it now prints better than most of my other machines!
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Chapters
00:00 Introduction
00:55 Cetus MK3
02:14 What are rough layers?
03:27 Inconsistent layer height
04:58 Play in the axes
05:39 Extrusion inconsistencies
07:20 The Wobbly Extruder Gear
08:17 The Fix
09:48 Summary
#3Dprinting #tips #fixed - Věda a technologie
![[Vowel]물고기는 물에서 살아야 해🐟🤣Fish have to live in the water #funny](http://i.ytimg.com/vi/3G9MH063Cx4/mqdefault.jpg)
I just tested 2 of my extruders and both had extremely wobbly gear. All this time I have been tightening my belts and changing Z lead screw couplers for nothing. Great find Stefan and danke!
Let us know if changing them improved print quality!
What sort of extruder gear or extruder assembly is it, manufacturer/brand?
What make and model of printer were they?
Yea, please do an update
Update please
FANTASTIC! this video contains everything that a hobbyist building a printer should know/check when performing the firsts prints of any new build! Thank you!
Hola :)
Mr. Sub-5-minute-Benchy is here! ;-)
Needs more servos.
This printer has less linear rails than one of his z axis 😜
After 2 months of 3d printing, going from ender 3 pro to ender 3 s1. I learned that you should build your own 3D printer lol. But it's true, if a manufactures makes two variants of the same thing then he/she is making one of them poorly on purpose to upsell an over priced model. Id love to get as much knowledge as possible about 3D printers because I plan to build a large scale one to quickly print RC fuselages.
Excellent video Stefan! And love your new amazon shop, just ordered the 1/4 inch thread inserts for camera mounts 😎 I can finally finish a small camera adapter now.
Awesome, thank you!
I had some weird gray PLA with some sticky surface. I've printed just few grams using it, but the sticky residue remain on the extruder gear. Over time, small shavings literally glued to the gear, changing the diameter on one side - got similar results to your prints. Simple wire brush and 2 minutes later, my prints became smooth again. Off went the PLA 2kg package.
Also a very valid point! Check that everything is clean.
Bravo! I went and checked my Titan copies and there it was, the gears are all off-center.
I don't print aesthetics, but I'm very happy about finally finding out the reason for inconsistencies!
Happy to hear that. Even though I'm also usually printing functional parts the extra quality helps with dimensional accuracy and I'd bet even strength.
what titan copies do you have?
@@chyrt Tevo/Homers. Avoid them at all cost. Generally I'd advice to stay the heck away from Titan extruders in general. There are better extruders available nowadays, for example BMG.
I don't understand why the gears are so sloppily manufactured that they're off-centre in the first place. If you're buying a tool for precision work and it's not even precise to begin with, the company who produces it don't deserve your money.
I would be inclined to just send it back and ask for a refund.
@@smoothwalrus9354 I don't think they produced this gear, for sure outsourced. Probably a qc issue. You always have bad parts, the problem comes when they didn't check enough
Stefan I really appreciate you laying out your issue diagnostics here, and I'm glad your methodical approach rewarded you with this unusual root cause! I've never seen an offset extruder gear in 100+ printers, but you've opened me up to new avenues, and given me a pep right when I need to troubleshoot a CR10 S5 with a gnarly lurch on its huge Y moving bed.
I am extremely impressed by your thorough and professional examination of this problem, and taking the time not only to show all the steps you went through to finally find a solution, but to make it sound so easy to rectify. Thank you for such a wonderful and informative explanation :)
The amount of attention to detail and thoroughness you put into making research and solving problems makes your channel so brilliant. Thank you for all the wonderful content!
A friend put together his Voron kit and discovered, after 100's of hours of fiddling, that the culprit was the wrong size gear delivered with the kit!
Again the best quality of video! Thank you!
Excellent video! I really like how you quickly went through a checklist of the kinds of things that could result in inconsistent layers and how to diagnose and repair them. I would love to see more videos covering different failure modes of 3D printers with steps for diagnosing and repairing them.
I think these incosistencies are the last bit of imperfections which for years I thought are undefeatable. Maybe not, you got my hopes up :) Excellent work. Your videos are by far the most useful ones for more serious hobbyists!
This video really does a good job at demonstrating that even the smallest part of the machine can have a major impact on the final print.
That’s an amazingly through set of issues to look at and how to fix them in a short timeframe. Great way to inform a community without assumptions of any level of knowledge.
"Guten Tag everybody, I am Stefan"
Das ist einfach die mit Abstand beste Begrüßung auf CZcams.
Begrüßung is a fun word to say.
@@tissuepaper9962 es ist spaßig wenn man nicht der deutschen Sprache mächtig ist.
ich finds schrecklich als Deutscher einem deutschen auf Englisch folgen zu müssen, aber offenbar ist das der einzigste Weg um an follower zu kommen
@@elofos0815 if it's hard, that means you're learning, right? Don't be frustrated so easily, think with the thirsty mind of a child.
I simply love this channel.
From just a curious gazer, i have made myself into a much mature 3d printing enthusiast.
Mature means now I can figure out the reasoning behind my bad prints and apply my own "kitchen science".
Thanks Stefan 💝👏👏👏
wow, great find.
Great walkthrough of the problems relating to"Z layer shift"
Thanks for sharing your experience with all of us 👍😀
Glad it was helpful!
I had the exact same problem with my CR-10 four years ago when I bought it. The extruder gear bore was also off-center. I realized it when I printed larger top layers where I could see gaps between the extrusion lines on some parts and perfect extrusion on other parts of the top layer with a consistent alternating pattern. I fixed it by just buying an Bondtech BMG and haven't had that problem since.
Yeah, good quality hardware sometimes pays out!
Very concise analytical explanation !!. I had the problems caused by inconsistent heat-bed heating back at the reprap times some years ago. Took me months to figure it out, since you cannot see it... and back then I did not expect that the deformation due to temperature had such a big contribution.
Brilliant video Stefan. Your attention to detail and tenacity is first class. Thank you for sharing.
Wow, thanks for going through your thought process and all the non-causes you checked along the way! The video was very helpful, visual, and concise!
I have a Cetus MK3 with exactly the same issue. There are definitely more than one out in the wild.
I've easily spent 100 hours dialing in every detail, rail, & cura parameter to achieve dimensionally accurate prints.
I've been racking my brain trying to figure out what the source of the layer inconsistency could be. I was about ready to concede it was my inexperience, switch to a smaller nozzle to minimize the effect, & accept longer print times.
I had looked at everything except the extruder gear.
I'm so happy someone with so much experience was able to look at the same problem & solve it.
You're the best.
A new way to start looking at the extrusion system of any 3D printer, i have not thought about before. Thank you very much for your input.
Awesome walk-through of potential layer height inconsistencies! One of my printers has developed similar symptoms, and I'd not yet gone through the thought experiment to list possible problems and causes.
I hope there's enough interest for at least a short video on fixing each, although some should be simple enough to spot and fix if you know what to look for.
Herzlichen Dank! Es freut mich, daß es kluge Leute wie Sie gibt, die willens sind, ihre Erfindungen freilich mitzuteilen.
Super, daß Du solche Informationen teilst und immer wieder wertvolle Tips gibst. Das hilft einem Noob, wie mir, echt voran zu kommen. Danke.
Bravo Stefan! This is the hardest type of problem I've had to diagnose myself. Or at least, very similar. In my case I had bizarre movement caused on X and Y because of accumulated dirt inside the drive gear grooves, causing uneven tension on my axis, variating between just tight enough and too tight.
You saved my life! I've been struggling with the same problem for weeks, I couldn't figure out which one it was because so many parts were replaced at the same time. I never thought of the bed. Thank you!
This channel has been a constant source of help, and insight. It really has helped me get to grips with all parts of the 3d print process. Great work as always!
Glad to help!
Stephan, your diagnosis was perfectly correct. Not only the cylinder shape that I was printing seemed like your original print. But also the hole in the center of the cylinder looked like an American football. I tightened the X and Y axes belts, and reduced the print speed from 60 to 40. That solved the problem. Also since I don't have a bed leveler. I made sure that my print bed was as level as I could physically make it. That also proved beneficial. Keep up the good work and two thumbs up!!
Stefan you're the Sherlock Holmes of DIY investigation. You'll win the Hitchcock award.
🕵️ At your service.
Very useful video, you showed the importance of the extruder gear and how it affects the print quality
I rarely subscribe to anything, but your channel has certainly made the list. I love how you explain things simply, but without treating your viewers like they are stupid. It is nice to hear the humility in your speech, even with all of your knowledge. Don't ever change.
Check out the Original CNC Kitchen threaded inserts: geni.us/CNCKInsertsChoice
Would love a recommendation for a cheap cnc with the capabilities of 3 axis up to hard plastics something like the cnc of the snap 3d printer
Hope to see these in the US soon :)
Hmm not available for Czech republic :D I hope we are in EU and very close to Germany ;)
Wow! That is *NOT* what I was expecting. Good find!
Can't wait for it to be available worldwide, been looking for a 1/4 threaded insert. 👍🏻
Thanks for a simple and systematic method of checking the various parts of a printer!
Great demonstration of how to patiently and methodically troubleshoot an issue.
Hi Stefan, vielen Dank für deine genialen Videos & Beiträge ! Ohne die ich nicht hinter all die Fehlerquellen des 3dDrucks gekommen wäre, geschweige denn so eine hervorragende Druckqualität erreicht hätte!
The best part of this video: All the different troubleshooting suggestions!!!
Impressive investigative work! And thanks for giving the thought of checking everything on our printers
Should totally have a 2nd channel just for hours long rambling, would love to watch that
Well that's one thing I never looked at. I eventually repaired my old MkII extruder because it printed better than the MkIII warranty replacement.
Always great content.
Thanks -Peter
I like how explained your thought process! There not enough of that going around.
Another great episode. Problem solving can be very frustrating. And/or very rewarding. And sometimes both.
Wooow, talking about an eye opener!!!! Thank you very very much Jürgen for the (i’ve lost count on how many uploads are available on CNC-kitchen…..) I know you are one very busy man sharing your time, investment and your experience to help others including me to improve the quality and experience of 3d printing. Therefore you deserve the best of all and most certainly all the credits you’ve received. You just make life that chunk of enjoyment easier. I’m very grateful for that. Greetings from the Netherlands my friend
That was a lot of detective work! Well done!
So cool to see a problem diagnosed and fixed.
Thank you for the videos you do. I'm always fascinated to watch and learn from the detail you provide. You are much appreciated!
Your channel its just amazing. Really unbeliaveble. Your content is gold. The way you approach the subject and the cientific method behind every investigation its really good!
Thank you.
Hugs from Brazil.
Im getting the same look on my prints took care of most thru z wobble now after watching this going to check my extruder thank man your videos are very helpful and just great to watch overall
That’s fantastic. I have a JGMaker Magic that continues to show print effects like that. Thanks for the ideas
I had a similar problem with my Ender 6 with a Biqu H2. This video led me to a grub screw that was a tiny bit loose on an extruder gear. Thank you so much.
Great video, I really liked the explanations and diagrams of different causes of layer inconsistency. Very informative.
However, I like modding a printer until not much of the original is left. It may not be cost optional, but it is fun.
I immediately suspected the extruder, more specifically in the drive system or gear. I have a similar problem, still using 3d printed gears which tend to shrink after it's printed and may not be perfectly round. Haven't got around to building a proper one or replacing with an off the shelf part.
Thanks for sharing your insights, very useful!
Fantastic! this wasn't what I was looking for, but is definitely something I NEEDED!!!
THANK YOU!
Excellent diagnostic Video Stefan! I checked my modded Ender3’s ongoing moire issues and found that the fine ribbed steel DD extruder drive gear had a barely noticeable excentic wobble when turning rapidly! I solved this problem by removing the gear and wrapping 1 layer of common 0.05 mm thick kitchen alu foil around the 5mm stepper motor shaft, then carefully sliding the gear over the shaft again. Since the shaft has a substantial flat side for the anti rotation grub screw, the small wrap of foil shim around the other side of the shaft to fill the minute bore-oversize gap. It me took some patience and multiple attempts to find the correct shape of foil to fit properly. Success! On tightening the grub screw reassembling the extruder and rerunning the stepper at speed
Amazing troubleshooting skills!
Great job on the inserts Stefan! Thanks for the video!
great video - the explanations for the things you checked were of great use. I will check all my printers one at a time just to see if there is any rotational offset.
thank you so much for taking us on a dive into the troubleshooting process! this information is absolutely invaluable!
Big help!!! This channel is now my go too to learn.
Awesome video! I really enjoyed watching as you went through the troubleshooting steps, actually taking the time to think about each step rather than just going to a general online guide.
I had this issue with my Sapphire Plus which uses a bmg clone. The set/grub screw had come loose and caused similar results but much worse lol. After I tightened it, near perfect prints as you experienced :) This problem was driving me crazy until I figured it out and it then made a lot of sense! Thanks for all your work on your videos. They're very helpful and informative!
I've been looking for a solution to this problem for so long. Thanks so much!
Really enjoyed this thorough investigation! I don’t think i have this issue on my ender 3, but at least i know where i should look if this ever is the case!
Awesome video Stefan. I'm always impressed by the quality of your stuff. This was a good catch!! Good work
Thank you and always happy to hear that!
Stefan, ultimate human RAR. Compressed so much information in such a short video.
Nice, I've had supspect of that gear and was one of the main problem after tightening all the screws. Also I used linear bearings and I changed for plastic guides, so the prints now are smooth.
Very good problem-solving video. It was a pleasure to watch even though I don't have a CETUS.
I recently changed the extruder gear on mine and I definitely saw an immediate improvement in the print quality; definitely something worth checking out since it's such an inexpensive thing to replace
The best!
I changed my worn brass extruder gear on my E5Pro to a stainless steel gear. Qualify was ok. Fast fwd a couple months....
I've seen this video before and it came up on my recommended feed, so I watched it again. Then it hit me...
My layere looked just like yours so I walked over to my printer and there it was... the gear was slightly off center!
3 cheers for CNC Kitchen! 🍻 🍻 🍻
Excellent video, thanks for going over the other various issues you troubleshooted despite them not being a cause.
This kind of stuff is what separates commercial junk from pro equipment (well, besides higher grade materials, but we're talking about in-home 3d printers!). The price starts going up and up the more they pay attention to details, but if you know what details to go over yourself, you don't have to pay out the nose just so someone else actually cares about the product they're selling to you.
I had a very slight version of this Issue on my BMG clone. I had sinewave extrusion. Due to the high hearing it was very visable on a single wall. I figure it out by printing rectangle/cylinders with the same mm of filament usrd every layer and then, designing a shape with less Filament used every 5mm-10mm etc. These shapes really help you figure out what kind of issue you have. sine eaves /ripples for example mean circular components like idlers etc
Random patterns mean lose components usually. I had a long guide on inconsistent layers and how to fix them but noone saw it and it's lost in the forums
This is a common issue with a cheap chinese BMG clones. 😥😥
So how did you end up fixing the sine wave extrusion?
@@Hasblock I just bought another one and kept that one for my tool 1 which isn't as important
Amazing detective work!
Thank's for the hint Stefan, a bit of knowledge just as useable as the tip on tuning the heatbed
Such an amazing project, thank you for all the info.
Great find Stefan, I hadn't considered that.
Brilliant. Although I never had the problem I really enjoyed your method and process of finding the problem.
Moin Stefan, thanks for the well done findings you presented in this video. I had the same issue on my Ender-3-Pro, where the extruder wheel was prefitted onto the extruder motor axle as fixed press-fit (no lock screws). I was glad to get this fixed with your help and really low overhead. Now my print quality is as expected.
After replacing the extruder wheel I ended up with a different observation, where I'm really keen, if this is an issue on your machines either: the new setup grabs the filament with a different spring load than before, so the transportation marks on the filament are of different depth for PLA as well for PETG and thus I need different E steps calibration for PLA and PETG.
Before reworking my extruder drive, I had higher E steps values for PETG than for PLA (difference was ~1%), now I have higher E steps values for PLA than for PETG (difference depends on material, ranging from 0.5% up to 1.5%), all affecting slightly my extrusion width.
Have you done some investigation on simelar issues?
Hi, Stefan! This may sound stupid to veterans of 3d printing, but hopefully it will help out some newcomers. I was having inconsistent extrusion issues on my Ender 3, and followed your video to diagnose. When I came to checking the extruder motor shaft for wobbling, I noticed that the grub screw holding the gear wasn't secured on the flat side of the shaft. Normally I'm very conscientious about that, so I'll just list it as temporary carelessness at some point, assuming it didn't travel on it's own. It's now extruding well again. Hope this helps someone...thanks!
Nice video, thanks! MihaiDesigns did a video on a similar issue a while ago. Apparently, pretty much all dual gear extruders suffer from extrusion inconsistencies as well, quite similar to the issue you found.
will have to look into this, I've actually really grown to like the Cetus, have done a couple modifications to it, maybe will do this one as well! Thank you for the detailed video!
Yep, my CR10 Mini had an offset extruder gear that caused both under AND over extrusion symptoms simultaneously. This was my first printer and it's a really bad way to learn when you have people telling you random and incorrect advice at the same time. Lots will tell you to adjust so-and-so settings, followed by more adjustments. Others will tell you to 'take it back to stock' without a 2nd thought and ignore you when you proclaim it doesn't help because it wasn't right whilst 'stock'
When I eventually found the problem, I made it a small personal mission to attempt to instill in as many people as possible that a stock creality machine (really only CR10 and Ender3 at the time) is capable of near perfect results whilst stock, and that you MUST check all mechanical aspects 1 by 1 because until you achieve that near perfect result, you are wasting your time with adjustments and modifications that will only bandaid a problem and don't address the actual cause
Unfortunately there's so much noise from people who will just instantly blurt out common bandaid 'fixes' and modification advice that it often does a disservice to people and leads to even more frustration. The one thing I desperately wished for was a proper step-by-step guide to checking every aspect, establishing known baselines and targets and only then moving on from there to actually understand and dial in settings. Not just shotgun random suggestions until it seems to work. It's a very inefficient methodology for having consistent reliable results and improvements
Good idea!
So an offset extruder gear is a wobbly gear or gear that is not centered ? How do they even machine a gear like that.
Aaargh... was für ein Aufwand wegen einer Fertigungstoleranz! Vielen Dank fürs Video, hab selbst nach 12 Jahren 3D Druck echt wieder ne Menge gelernt!
Always staying true to your routes
excellent video, you are a true scientist of 3d printing
Thank you for these important points to check! I'm about ready to to give up on my Voron 0.1 (LGX lite/Dragonfly) because my results are so incredibly inconsistent. Plate wobble will be the first thing i'll check before i need to roll up my sleeves and probably strip everything down to find the problem. So this video did give me a good jolt in the right direction, thx!
Finally! Someone covers the issue ive been having with my printer! 😁 Thank you so much! 😊
Great to hear that! Share your story with us!
This info is pure gold, man! Thanks for sharing it.
Thanks Stefan. Having this very issue.
Your explanations are fantastic! Thanks!
Excelent video! congratulations from brazil!!
This video saved my printer. I did all the same things thinking it was electronics/bearings/belts… thank you.
Finally found some 1/4 by20 threded inserts thanks to your website instantly ordered
A really fantastic video! Thank you for your continued excellent work!!
I can't wait till those inserts are worldwide! Thanks for the excellent video!
Thanks Stefan ! Up grading to a MacEwen extruder saved a lot of prints for me, on the Ender 3.
this kind of glitch is very hard to find, well done!
very good job presenting your troubleshooting of the system
This a great find!! It probably would have taken me two years to figure it out as well. I'm getting waviness in my zaxis but I think its the recent seasonal changes messing with the ambient room temp & the PID tune on the bed &/or nozzle.
Yo thanks for keeping the ad short and simple to the point. Liked the video just for that
I appreciate that!
Also as a bonus - no midroll ads ;-)
I have had the same problem with prints almost from day one with my printer. I've put linear rails on every axis, added another z motor and screw. Made sure there is no binding in any axis and no banding in the z axis but the problem remains. When I get home I will check the grub screws on each axis and then the extruder gear. Your video just might be a life saver!
Wow, I have been working on 3d printers for 10+ years (mostly DIY)... never seen that before! but will certainly be adding it to the list of things to check for if they have irregular extrusion. Nice find.