I haven't changed anything about the printer, tried to level it time and time again even checked the roller things at the gantry yesterday it was very clear to see that the filament on the left half of the bed was being printed a lot higher than on the right, today it's not really clear to see what's going on in the video is the first print after leveling and I altered the z offset while it was printing the brim to try and fix things but at some point it always catches the brim and rips the whole print off You can't see it in the vid but the first layer was fine up to the hook that it catches didn't notice fast enough to tilt the camera in that direction
Help - my Kobra 2 was working absolutely flawless until yesterday now all I get is spaghetti
as above but AFTER you have washed your plate, Get a steel ruler with millimeters on it , while the machine is turned OFF. put the print head in the middle of the plate and measure the distance on each side of the X carriage , Hold the stepper motor on the side that is higher than the other still and carefully turn the other stepper motor till it raises that side till it is as close as you can get it to the other sides measurement. from my guess your stepper motors have had a slight timing mistake(this is if you have dual Z.
If you don't have dual Z there is a cam bolt on the side that doesn't have the Z motor that will need adjusting because over time single Z machines tend to eventually sag a little on the side without the Z motor
I don't think thats the solution it just prints like absolute garbage I just lowered z offset until it looked like the lines would finally be squished into one another instead of being separate lanes and it did make it to the actual print phase but then the layers it did for the print were absolutely horrible there's proper gaps in them and it sounds like the print head is scratching over the print the whole time I don't know how I can add pictures here else I'd show you
Then it sounds like a bed problem I see this happen all the time printers working fine and then all of a sudden they're getting knocked off the build plate by just printing so it's not sticking you must've touched the build plate or haven't washed it in a while if it's not that then I'm lost
How cold is your room? I noticed that I sometimes get a similar issue when my room is a bit too cold
About 25 Celsius
Then you may have underextrusion.
Do a cold pull (should be done regularly) to clear any debris in your nozzle. With openings as small as they are, it doesn't take much to fully or partially clog a nozzle.
I created a drive folder to share pics along the process so far I was able to print the default shark model but it has a very strange hole in its back while otherwise looking very good
https://drive.google.com/drive/folders/1qKaGSnHHOCO8Iz0HNTxkh3ImRZHzW8hn
Looking at the first print, you definitely were too high.
Aha... I love how all you experts keep shouting the same things and are absolutely convinced each and everyone of you is 100% correct and flawless...
It wasn't the z axis, my bed was clean, everything was fine nothing had to be fixed it was just this one model that I had designed myself that has been acting up. I've printed many many things since and they all came out perfect and had perfect bed adhesion. For this faulty one I ended up printing in stable mode so I just slowed it down and it worked like a charm too. The issue here was that there was no contact with the bed except for a 2mm brim the whole model had this raised border on both sides and so it was just hanging mid air and the border just needed slow printing...
I mean I'm thankful for all the responses here but almost everyone here is so absolutely convinced of himself being the one true expert it's a bit much...
FYI for future reference, coming here asking for help and then in turn insulting those trying to assist isn't the best way to get the help you're looking for.
I never claimed to be an "expert", don't think anyone has.
If it was printing too high and you had to "lower" it to get the lines to "squish together" then your Z was too high, this is a fact you told us. Now the cause of that situation may have not been your calibration, perhaps there was some error in the G-code of that one file (slice).
Have you tried re-slicing that one print? I've had a couple bad slices over the years that almost had me convinced my printer was broke. Some error in the slicer or on the SD card I don't know. I just know they were f'ed up and the printer did weird things.
Mate, you literally wrote "[...]you definitely were too high" It's not "I think it could be your z offset" it's not "hey I noticed [...] you could try [x]" It's the certainty that every one has that I got a problem with and just FYI... I didn't insult anyone I'm telling you, because you responded to this several weeks old post, that I stopped responding to ppl because everyone was certain <insert theory here> And if they said "yeah definitely you haven't cleaned your bed with soap and the blood of an exactly 2.753456821 hour old fetus" and I told them "hey, thanks for the reply but I actually did exactly that" or "hey thanks for the suggestion but that's not the problem I have actually" people just told me "yeah no you need to do what I said and I know you haven't cleaned your bed!!!"
And that's... I don't even know what to call that... That's like mansplaining it's unasked for advice and even when you say "hey I know that's not the issue" ppl will insist they know better even tho they never even saw your machine irl
I'm not your mate.
The pic of your issue spoke volumes, it was too high.
And you left out material details about how it worked fine with other prints pointing people in the wrong direction effectively setting them up, then you released more information contradicting them. Good on you, I'm sure it feels good.
User deleted comment
1mo
UPDATE 2: Yeah no... Looked away for two minutes and its a huge blop on the nozzle again...
UPDATE 3:... It's onlz getting more and more confusing now: seeing as the first layer was looking absolutely fine I decided to try one of the default test prints that come with the machine - in my case I picked the bottle opener shark as it only takes 10min and I just wanted to see if that works and it's now 50% done and looks perfect... What's going on? Could the Anycubic Slicer have messed up my model?
Maybe try another slicer? I recently switched from Anycubic Slicer - which is absolutely fine as far as I can tell - to PrusaSlicer, as it offers a lot more functions in some aspects.
i got a vyper, got same result, started using glue stick......solved
It's absolutely not the bed adhesion, prints are sticking fine im currently running a test model print and that looks perfect so far I'm not sure what is causing this maybe it's the model itself?
Selfmade model from fusion 360 btw then dropped that into anycubic slicers as aways
Lower your z axis more. Increase initial layer flow. Decrease initial layer speed.
Try these in this order.
Clean the bed properly before use if you haven't and use warm soapy water. Don't rub it with cloth, let it dry under a fan. I personally haven't used any adhesive yet cause when I do the things I mentioned above, it works well.
I'm looking at an extrusion issue, i think. Recalibrate the whole thing if possible, and then look at slowing down your first layer if you can, whilst maybe increasing your temperature by a few degrees or so, especially if adjusting the z offset isnt helping. If you're seeing globs at the tip of your nozzle, maybe dissassemble and check for a partial clog, and if its globbing in the first layer, your offset is probably too low, albeit that doesnt seem consistent with the first layer catching. I've had the same issues, but mine have mostly been resolved with adjusting the temperature and slowing down those first few layers before the fan kicks in. Washing your plate with dawn may be beneficial as well. Hopefully, something helps. Another possible, albeit unlikey cause, could be your filliment has too much friction and is getting stuck on the way to your printhead.
Lower your print speed like 50% on the first 2-3 layers.
Also do Autoleveling and then z-offset until you don't see single lines anymore
Did you take a look under the model in Cura, does it have build plate contact everywhere?
It doesn't it's basically shaped like the number 2 but then it has a raised 2mm border on both sides so the whole model is attached to the plate by that 2mm border but I did activate brim and it creates a large brim too
This happens to my kobra 2 Max after a few hundred hours on brass nozzle tips.... It goes from printing beautifully to absolutely garbage and you can't figure out why ...change out your $1 nozzle tip and try it out
As the other comments... My pro was doing great then bam started stirring and getting puled of the plate.. hate to say stock nozzles are junk. I changed mine out to a ruby nozzle .and re. Levelled the bed and what do you know prints better than before
Have you lubed the axises?
print a big square with the center removed, manually adjust the front left until it adheres correctly. You can tell it's the left by the purge line.
Change your nozzle tip
I use a glue stick. I know everyone says cleaning your print bed, but every time I do, nothing will stick. I keep mine nice and gluey
Z-offset… I had this problem too. For whatever reason after calibration it slowly gets out of tune on the z-offset. I had to lower mine by like .20 try printing the 1st layer test print and just adjust the z axis accordingly it should look like one piece rather than individual strands being printed.
It doesn't get out of tune but your Nozzle starts to wear out so the gap gets larger.
That's why I repeat Autotune every now and then or at least correct the z-offset accordingly..
Little less speed first layer and this stuff https://a.co/d/bcVUv7q and you should be fine on pla I like to use 0 space brims on large stuff
spray on glue and never again problems
I had this issue once with my Kobra 2, shortly after a firmware update. I changed a few things in the slicer, trying to fix it. In the end, I ended up using the same settings as before and it worked again. Probably was just a clogged nozzle that unclogged during the process. Maybe try printing with a higher flow rate or push some filament manually through the hot hotend.
Bed adhesion issue, what is your bed temp?
Change your nozzle, lower the nozzle a little. Wash your hotbed with detol which is what I did, I then purchased 3d printer glue and the problem is sorted and working.
This looks too high (your Z height).
Also as everyone else has mentioned, clean your bed.
I had a similar problem, here was my fix:
People are saying clean the bed with soap and water, I have an anycubic kobra and soap and water did not work on my stock bed. I use acetone. That’s it. Acetone on a cotton ball. Wipe off the bed with that until you don’t feel any bits of the cotton ball catching on anything, then wipe again with a new cotton ball with more acetone. Then heat up your bed for 5-10 minutes to fully evaporate the acetone.
Also, you’re saying that it’s clear that the filament is printing higher on one side than the other. Most likely, it’s one of two things: your gantry isn’t level, or your bed leveling auto-mesh isn’t right. If you’re sure the gantry is level, then run the auto-leveling, then make sure to set the z offset again, as every time you auto-level, it will reset the offset.
Then, the basics:
make sure your bed is trammed/level. This is crucial. Take some time, watch some YouTube videos and honestly spend a good hour at LEAST really nailing down your bed. I know it’s a pain, but I promise it will save you from this headache again in the future.
Make sure the z-offset is dialed in. (It sounds like in some of your update comments you lowered the offset too low, that can be as much of a problem as too high.)
In your slicer, lower the initial layer speed and height. It’s better to print slowly and get a good result. You might want to turn off cooling for the first couple layers as well.
Good luck. Hopefully this helps. It did for me
Edit: if all else fails, there’s nothing wrong with taking it in to a 3d printing service near you and having them troubleshoot it for you. It’s worth the $50-100 to have them tell you what was wrong.
Clean your plate.
Wash your build plate with soap if that doesn't work check your Z offset