Jump to content

ZachariahS

Member
  • Posts

    9
  • Joined

  • Last visited

Personal Information

  • 3D printer
    Other 3D printer

ZachariahS's Achievements

1

Reputation

  1. https://help.prusa3d.com/en/article/the-benchy-hull-line_124745/ it’s not the printer. It’s not a hardware problem. It’s not a software problem either apparently. It’s just physics. This link is the only thing that I have seen anywhere on the internet that actually acknowledges what I am saying and believes me when I say it’s not my fault. Cheers anyway. Glad I didn’t fork out for yet more tuning and modifying of my printer based on advice from here.
  2. I'm gonna say this one more time and then I'm not replying any more because I don't feel like I'm being listened to. This is a problem I have had with more than one printer. The over- or under-extrusion are always - always - in line with a large area of skin elsewhere in the model. It does not occur at any other point. This is clearly NOT just a Z banding issue because either the Z axis moves ok or it does not; something about the printer and the GCODE and the slicer is doing something different at the top of large top-skin areas. It's mad to me how anyone could ignore this??? To prove this point I have done three different test prints that all demonstrate exactly what I mean. These somehow seem to have been disregarded and instead used as evidence that my printer is not dialled in properly, despite them showing specifically the issue we are here to talk about. I have printed a temperature tower today with a GCODE from online and the issue I am experiencing is not shown at all. The tower has printed really well (apart from where the temperature went down to 180 and the print then failed, which is fine). I have been through years of troubleshooting and have no solution to the problem, I have previously outlined the excessive steps I have taken to try and solve it. I've even asked for some GCODE to further prove the point and this request has, for some reason, been declined. The photos shown above from GregValiant are blurry and dark; it is not possible to identify whether the same issue is present or not. What I've done is tried to report a bug. I have explained in detail the amount of steps I have taken to try and solve this problem, for years. I have said that troubleshooting my printer does not work. This somehow has not been heard and I have then been subjected to more troubleshooting. I have also simultaneously been told that no-one else is reporting this error in Cura and been told it's not an error in Cura, which immediately means that anyone else reporting this bug is also going to be brushed under the carpet.
  3. The thing is though, these errors all line up with a large area of skin somewhere in the print. I'm not getting random errors. The under-extrusion and over-extrusion are occurring at predictable points, predictable to the point that I can design these models with the specific intention of causing the issue. It's not just random problems. I'm currently printing a temp tower and this issue is completely non-existent so far on the print. I used a downloaded GCODE without slicing the model myself. And the issue straight up does not exist so far on the current print, sliced by someone else. If someone could take one of the models from the tests above, and slice it with their own profile, and send back the GCODE I will print it without touching Cura. That would be really helpful actually. I have not calibrated e-steps on this printer but did on my old one. This printer is quite new, I would be very surprised if there were already Z issues with it.
  4. I'm dying to know how it comes out! Because if you have the same issue then it's clearly a software thing, right?
  5. Quick update too: I managed to easily snap off the top box on TEST1, again with just finger pressure it snapped right off at the base.
  6. So firstly I have posted this on Reddit and Facebook groups and there are always a couple people who say "I have noticed this too". But secondly and more importantly, please consider that I have been 3D printing for years and have just now discovered the cause of this, everyone I speak to, yourself included, assumes it is an issue with my build which would completely prevent it becoming known as a widespread issue if everyone assumes it's user error. Thank you for your in-depth analysis into the GCODE! I see what you are saying re retraction and the head not lowering again. Perhaps I should set Z hop to something silly like 10mm? Just to see what happens? Or perhaps turn off Z hop for a trial? I've printed three test files and some artifacts are visible at the same layer as a skin performed elsewhere. I've uploaded project files which were printed exactly as saved. Sometimes the top layer under-extrudes, and sometimes it over-extrudes. I really don't get it. TEST1 TEST2 and TEST3 with different geometric models. You can see the errors in the photos. TEST1: TEST2: And TEST3: Project files from Cura also attached. TEST1.3mf TEST2.3mf TEST3.3mf
  7. The thing is, as I say, I have been through this with many different experts on multiple printers for years. What I am trying to do is draw attention to the fact that there is an error within Cura. It's not a coincidence that it is one layer that seems to be "skipped" in some way that also coincides with the first layer up from a large area of top skin. This happens on multiple models, with many changes in settings over the years, with more than one printer, at no particular height other than it being the first layer up from a top skin elsewhere. It even happens if I print multiple models - when the shorter one finishes, the next layer on the taller model will have errors. It doesn't happen with "irregular" shaped models, or organic models, it only exclusively happens one layer up from large flat areas that are parallel to the build plate ie completely horizontal. I'm really not interested in troubleshooting any more as I have been through so much of it. I have had new nozzles, I have been told my bed isn't level (not even the right word but anyway), I've been told my Z axis is binding and too tight, or wobbling and too loose. I have replaced my extruder, I've swapped the motors round, I've had wider and narrower nozzles, I've had new PETG tubing and couplings, I've had different beds, different filaments, different temperatures, I've printed devices to tighten the X and Y belts and when they didn't work I bought some too, I've replaced the X carriage, I bought tighter bed springs, the list goes on and on. My old printer became the ship of Theseus because of all of the modifications and changes and upgrades that people recommended. I spent days, weeks, months troubleshooting every aspect of it. Everything. The other day when I turned off combing and that actually worked, I cried, I honestly did because this has been such a difficulty in my hobby life for so long and I finally solved it. I appreciate on this specific photo I have some under-extrusion. And believe me when I say, I am extremely frustrated at that because it becomes very easy to blame that as the problem. If my print was otherwise perfect, then what would you say? I think it is impossible for any reasonable person to look at the Combing and No Combing photos above and try to pretend that it's an issue my end. Both models are not perfect. Both have some under-extrusion and some gaps between layers. Both can be improved on. I think it's the cheap filament. But only one of them has a fatal flaw in it, and that one is the one with combing turned on. Please don't try and pretend it's something else. To prove my point I will print several models now, with combing turned on and then combing turned off, and I will save every project file and upload them, along with photos, but I'm done dismantling my printer again and again and again because it's not a printer issue. These two models were printed back-to-back, nothing in between, less than 2 hours between finishing one and starting the next. Ultimately, I have solved this problem for myself. Combing is now firmly set to Off, and since then I have had 100% success rate with my prints, prints that I no longer have to glue back together, or glue to prevent breakages, or melt with a lighter and burn my fingers any more. I am so happy that I have solved this issue for myself. What I am trying to do is report this to the manufacturers of the software, with evidence of the error, so that it can be corrected for probably millions of other users. If this is not the place to report bugs and errors in Cura software, where is?
  8. Hi thank you for your reply. I have modified my settings but I still have the GCODE files, which I will attach in a moment once my printer finishes and I can get the microSD card out. I don't have the original model any more either, I've modified it for what I need, but I still have a very similar version which I have saved and attached as a project file. EDIT: GCODE now attached It is PLA but I also printed with PETG a few years ago and it was the same then. I printed a little bit in TPU and it had the same issue but also TPU is a bugger to print with so I haven't done much and not for several years. I've also attached some photos, I hope they are useful! I also snapped one of the top panels off to show how clean the break is, and also to photograph the underside. They break off really easy, with just a fingernail. The other layers are really solid, I can't break them. I've actually counted the number of layers on the piece that broke off. I counted 17, which is the same number Cura is giving me for the top panel too, so it's not missing a layer on the print. CE3_EyeREADY.3mf EyeREADYxxxx.gcode EyeREADYxxxxNOCOMB.gcode
  9. Error report for Cura 4.10.0 I've noticed an issue for a while now, for over two years, where sometimes when printing large flat areas, the next layer up will significantly under-extrude. I went through so much troubleshooting with so many people across facebook, reddit and other circles, and after everything was tried, the answer given was "Sounds like it's just your printer". Well now I have a new printer and I am still getting the error. I had an Ender-3 and now I have an Ender-3 V2 and I still have the issue. I have attached photos. In the photo called combing (I believe it's the first photo) combing is set to All in Cura settings. As you can see, when the grooves are printed in the outside ring at the top, the next layer up is having significant issues all the way round. This is a consistent problem, it won't only affect some of that layer, it will always affect all of the next layer and then return to normal printing. In the 2nd photo, the only setting I changed in Cura was Combing, which I set to Off. As you can see, the error is completely non-existent. Nothing else was changed and they were both printed one after the other. Please I ask that this is taken seriously because so many people have just assumed it's something I am doing wrong, and I have been tearing my hair out and ruining print after print for years because of this problem. Please can it be taken seriously and fixed.
×
×
  • Create New...