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Everything posted by Smithy

  1. Update: At home on my Macbook it was still the same, also after deleting all Cura related directories and reinstall. But after playing around with the profiles, I got an error message from Cura that something is wrong with the profiles and that I should reset to factory defaults. I did it and retested the custom profiles and now it seems to work. So whatever happened and why the reinstall was not successfully, now it is working! I assume that I have missed maybe some parts of the previous installation and the "reset" fixed it.
  2. I just installed Cura on another computer and here it seems to work after a short test. So maybe there is something wrong with my installation. I will try to remove everything and reinstall it, maybe it helps. The steps I try to test is easy: Open Cura Select a default profile (Normal) Change the value for "Initial Layer Horizontal Expansion" to -0.25 Save with "Create profile from current settings" Select again a default profile - the setting should now 0 again -> OK Select the previous saved custom profile - setting should now again -0.25, b
  3. You are right, but I tried to measure to avoid those bulges. My failure was, that I printed nearly every test object with the "Fast" profile and there the accuracy is not as good as in "Normal" or "Fine". With the normal profile (0.15) the accuracy is quite good and I just have +/- 0.2 max. difference to the actual dimensions which is good for the 3D printing technology I think. Just in inner holes there is more difference, but I read that this is also "normal" and I have found some options to play with to optimize also the inner holes.
  4. @nallath Please find attached my zipped Cura log. Today 15.8. I tried again a custom profile with some settings, Speed, Line Width, but they are not saved or they are saved but not restored after selecting the custom profile. cura.log.zip
  5. Thank a lot for your help and very informative description of the problem! The UM3 is quite new, 2 weeks old, but I checked the belts, all are in similar condition. I will also check and clean the Z screw, unlikely it is already dirty within this short time, but who knows. How can I use a AA 0.4 profile with the AA 0.8 core? I assume to duplicate the AA 0.4 profile to have a custom one, modify your suggested parameters and then select this with the 0.8 print core, right? Because otherwise, the default profiles are unavailable if 0.8 print core is selected. B
  6. Just want to give a short update to this topic: I could solve it, with the "Normal" profile, so the conclusion is, to print slower helps a lot. Thanks again!
  7. Ich will hier noch ein kurzes Feedback zu dem Thema geben. Es ist nicht wieder aufgetreten - zum Glück und ich drucke jeden Tag mehrere Teile. Dabei sind auch etliche Filament Wechsel drinnen oder ich drucke mit dem vom Vortag geladenen, alles ohne Probleme. Ich kann mir nur vorstellen, dass es möglicherweise etwas mit der Luftfeuchtigkeit zu tun hatte. Wo es aufgetreten ist, hatte es bei uns fast schon tropische Temperaturen und Luftfeuchtigkeit. Obwohl es PLA war, spielte das vielleicht doch nich irgendwie hinein. Wie auch immer, danke für eure Hilfe und ich hoffe es
  8. Thanks, I will repeat the steps in Cura, save profile, load a default one, change to the custom one, that you hopefully, see something in the log. Hope I can do it tomorrow and come back to you. Thanks!
  9. I just bought another print core AA 0.8 to speed up some of my functional prints where it is not so important how smooth the shell quality is. Generally the quality is quite good, with the 0.8 print core and printed with the Cura "Extra Fast" profile 0.3 layer height. But in some parts of the object, there are some strange failures and I have no clue how to fix it or if it is just the result of the fast printing. But if so, why just on some layers and not on every layer on this specific part of the object? Here two pictures, which shows the problematic part and the backside which i
  10. Yes of course, what do you need exactly? And where do I find the log? (I am on Mac)
  11. Hi I created a profile with some settings and saved it in Cura (latest version). But when I select this profile not all settings are set. I think the reason is, that the values which are missing, are values which are "calculated" ones and I assume that therefore the value is not saved in the profile. For example I set "Initial Layer Horizontal Expansion" to -0.25, saved it in a new profile. But this value is missing in the profile and it seems that it is not saved. Is that something I have to live with it or is there any workaround? If not, how do you h
  12. Thanks gr5 for your explanation! This community is great and helps a lot to understand and to learn how things play together.
  13. Did you set the slicing tolerance to Exclusive or something else?
  14. I want to give an update to this topic, because it could help others (beginners) with similar issues. I printed today a 20mm cube in the different Cura profiles Fine, Normal and Fast, and got some findings: In Fine - no corner issue is available (or I cannot see and feel it), in Normal you can feel it a little bit but not really noticeable and in Fast it is very present. Normal thinking people would say, yes quality is lower when printing faster. And yes it is, but when the printer is quite new and you want to print a lot of things, you don't think normal (specially me)
  15. Hi Danke für den Hinweis, werde ich kontrollieren falls es wieder kommt. Bis dato ist es zum Glück nicht mehr aufgetreten, egal ob bereits geladenes Filament oder neu geladen.
  16. Generally it is dry, yes, but sometimes it rains a little bit or it is cloudy and then it is really humid and terrible. But thats summer, if it is cold and rainy we also complain ? HAHAHAHAHAHA ??? Sorry about that. No problem at all, it happens very often ?
  17. One small but important note: I am in Austria (Vienna, Mozart, Skiing) not Australia! ? There are no Kangaroos in Austria..... But due the extreme summer temperatures we currently have in Europe, the humidity is nearly tropical.
  18. UM tech sheets say, you should store it <50% humidity, so I think 40% should not be a problem. But the humidity currently here in Austria about 75% is too much. So I moved my tests with PVA to a dryer period ?
  19. Thanks, then I will give it a try. Generally I think I should buy a spule from every material (UM only) too get a feeling and to see how it behaves in different conditions.
  20. ups, sorry ? How do nylon print, is it complicated, beside the hints on the UM webpage?
  21. colorFabb’s HT is similar to CPE+ I think - or not? And I read that this not so easy to print, specially for beginners, but I haven't tried it yet. I am currently happy with my UM3, bought it just last week, so I don't plan to tune or replace some parts now. (maybe later ? ) Therefore I should go with material compatible with the UM3 to of the box. So when temperature is not an issue than TPLA and if higher temperatures are needed then CPE or more higher CPE+, right? I want to construct and print a holder for my network equipment at home (Unifi) and the ro
  22. Thanks gr5 for your detailed answer! One more question, when you speak about lowering the speed to 20mm/sec you mean the overall "Print Speed" setting? If understood correctly, when I disable jerk and acceleration and set print speed to 20mm/sec for example, then the whole print will be printed at this speed or do I have to correct all other speed values as well? There is a lot more of learning, but it makes fun! Thanks for your help! Christian
  23. Hi I am diving through tech sheets and articles about materials, but cannot find any answer to my question. What should be used or is better in handling/printing when the main difference i.e. chemical resistance is not an issue. So in other words, I am just looking for a material like ABS, but not ABS. It should be just more strength than normal PLA. Or is in that case ABS the material to use? I know it is hard to suggest a material without the exact knowledge about the usage of the printed part, but I am looking more less for an allrounder without any extreme requ
  24. Hi Owen thank for your reply. So you mean, thats a more less "normal" behavior in 3D printing? I am just in a deep learning about all these things and hoped there is a little custom configuration and all is good again ? I had a similar issues with the "elephant foot" and found a good hint how to avoid it. But I will try the next print with slower speed and come back if it was better. For most parts it is not really an issue or only a cosmetic one, but when it comes to spare parts with fixed dimensions then it could be a problem. Christian.
  25. Hi I hope I can express my problem understandable in English (I am not a native speaker). My problem is, that all prints have over extruded corners along the Z direction. Maybe it is not really a over extrusion, I think it has more to do with overlapping in the corners. The next two pictures hopefully shows what I mean (view from the top) How can I get rid of these issues? I am using a UM3, Cura and PLA. Haven't touched any Cura custom settings, just printed with Fast or Normal, but it is with both profiles. Thanks!
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