(HOW) I fixed the Ugly Layers on my 3D Printer
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- Опубліковано 14 тра 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 - Наука та технологія
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.
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.
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!
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 :)
"Guten Tag everybody, I am Stefan"
Das ist einfach die mit Abstand beste Begrüßung auf UA-cam.
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.
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!
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 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!
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!
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.
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!
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.
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.
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 💝👏👏👏
Super, daß Du solche Informationen teilst und immer wieder wertvolle Tips gibst. Das hilft einem Noob, wie mir, echt voran zu kommen. Danke.
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.
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.
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.
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 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.
Brilliant video Stefan. Your attention to detail and tenacity is first class. Thank you for sharing.
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!!
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
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!
Stefan you're the Sherlock Holmes of DIY investigation. You'll win the Hitchcock award.
🕵️ At your service.
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!
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.
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.
Another great episode. Problem solving can be very frustrating. And/or very rewarding. And sometimes both.
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!
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!
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
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!
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
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
Thank you for the videos you do. I'm always fascinated to watch and learn from the detail you provide. You are much appreciated!
The best part of this video: All the different troubleshooting suggestions!!!
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
thank you so much for taking us on a dive into the troubleshooting process! this information is absolutely invaluable!
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!
Great demonstration of how to patiently and methodically troubleshoot an issue.
Thanks for a simple and systematic method of checking the various parts of a printer!
So cool to see a problem diagnosed and fixed.
Impressive investigative work! And thanks for giving the thought of checking everything on our printers
Very useful video, you showed the importance of the extruder gear and how it affects the print quality
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.
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!
I like how explained your thought process! There not enough of that going around.
That was a lot of detective work! Well done!
That’s fantastic. I have a JGMaker Magic that continues to show print effects like that. Thanks for the ideas
Should totally have a 2nd channel just for hours long rambling, would love to watch that
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.
Fantastic! this wasn't what I was looking for, but is definitely something I NEEDED!!!
THANK YOU!
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.
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
Stefan, ultimate human RAR. Compressed so much information in such a short video.
Great job on the inserts Stefan! Thanks for the video!
Big help!!! This channel is now my go too to learn.
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.
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.
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! 🍻 🍻 🍻
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!
Such an amazing project, thank you for all the info.
It's great to see a video for the Cetus. This was my first printer (MKII) and I've heavily modded it. Seems like there's something new on the to-do list.
Happy to hear that. I finally fell in love with it after being so disappointed at the start.
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.
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?
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.
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!
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!
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.
I love my cetus mk2. If they came out with an updated one that had silent steppers, id say it would be the perfect 2nd printer. It's extremely accurate and reliable for me. Very interested in seeing the main board swap video!
I can't wait till those inserts are worldwide! Thanks for the excellent video!
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.
I get a kick out of creators who comment that they COULD make a video about something, but it would be hours long.....then I look over and my cat, who's watching a 12 hour long video of birds eating seeds in a park, and I question, who wouldn't want to listen to Stefan's angelic voice for several hours?
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've been looking for a solution to this problem for so long. Thanks so much!
Thank's for the hint Stefan, a bit of knowledge just as useable as the tip on tuning the heatbed
I had a similar but different problem, which meant that one side of a model would be printed with underextrusion, which was a great problem with thin models, but has progressed to cause problems with higher models. I feel this might be what you described a misalignment of the z-axis. Since it is a constant mistake, I don't feel it's a wobble perse, it's too constant.
I moved the printed 4 times in the last half year and it has been stored for at least 3 months, so a slight bend seems a possibility. Great video. I am on a similar forensic investigation :) and this gave me a new idea, after replacing the printhead.
Such an amazing video!
I've just discovered this channel - definitely subscribing!
Aaargh... was für ein Aufwand wegen einer Fertigungstoleranz! Vielen Dank fürs Video, hab selbst nach 12 Jahren 3D Druck echt wieder ne Menge gelernt!
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!
Been playing with 3D printing since 2014. Today was the first day I was aware of extruder gear issues...
What a difference in print quality simply setting tension and concentricity of the feed gear! :O
Super Sache, Stefan. Weiter so!
Great find Stefan, I hadn't considered that.
This info is pure gold, man! Thanks for sharing it.
Wow, what an exceptionally useful video! Both of my printers (an MP Mini and Rostock Max v2 delta) have developed inconsistent-layer problems over time. The Mini did have some worn linear bearings on the bed, and replacing them helped a lot, but it still needs a lot of improvement. This video is such a great walkthrough of all the possible causes of the problem that it gives me a step by step guide of what to look for.
==> This is probably *THE* single most useful 3-D printing video I’ve ever watched. Thank you so much!
Thanks Stefan ! Up grading to a MacEwen extruder saved a lot of prints for me, on the Ender 3.
You know you have it made when Wekster does a mini of you. Would love to add your mini to my collection.
Back on topic. This was an informative, well crafted video. Many times you go over my head, but I get enough to help me with my 3 printers. I am looking at rebuilding my 1st 3D printer, which is basically a dummied down voron of all things. A true core XY printer, but the body is made from polycarbonate panels. The motherboard went, and that was it. a 100 by 100 by 120 cm non heated printbed.
Lookinh forward to your next video.
This video saved my printer. I did all the same things thinking it was electronics/bearings/belts… thank you.
Always staying true to your routes
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 ;-)
Brilliant. Although I never had the problem I really enjoyed your method and process of finding the problem.
Amazing detective work!
Finally found some 1/4 by20 threded inserts thanks to your website instantly ordered
Ich Feier diese Begrüßung einfach so, die Verabschiedung is auch nicht schlecht. 😂
Freut mich 👍
I had this problem with my Intamsys Funmat HT Enhanced and changed out the extruder gear, and that one change made all the difference.