Jump to content
Ultimaker Community of 3D Printing Experts


  • Content Count

  • Joined

  • Last visited

Posts posted by V3DPrinting

  1. I have redone the same print jobs with 2 Ultimaker Printcores, but with active leveling set to 'always'.

    The print went well for the two first layers

    First layer height on material 1 is between 0.25 and 0.28 mm for a 0,27 mm target.

    First layer height on material 2 is 0.23 mm

    Which is fine.


    I have also redone the same print job with 2 3d Solex Hardcores (0,6 mm nozzle for material 1), also with active leveling set to 'always'

    First layer height on material 1 is between 0.25 and 0.28 mm for a 0,27 mm target.

    First layer height on material 2 is only 0.09 mm


    So I must admit there is something slightly different in the two brands of print cores, around thermal expansion of the nozzles or print core.


    It was better handled in the previous firmware and not noticeable when active leveling was on, which is my usual way of working, always swapping printcores.


    I also use the same combination of 3d Solex Hardcores / materials in my S5 without any problems.

    So it is linked to the UM3 with the 5.x firmware.

  2. @CarloK

    I have made the same test print of a Benchy with the same materials as before, but with a 0,27 mm first layer height, 2 Ultimaker Printcores




    Before printing, I have done the following on the same printer as in my previous post

    - Ultimaker Printcore AA with 0.4 mm nozzle set in slot 1

    - Ultimaker Printcore BB with 0.4 mm nozzle set in slot 2

    - Made a cold pull in both print cores -> no material left in the nozzle.

    - Set Build plate Temp to 80°C (working temp for the job) waited it to stabilize

    - Set the 2 printcores temp to 240°C (close to working temp for the 2 materials)

    - Manual bed leveling with a sheet of paper, just gripping slightly the paper. I made a specific attention to the Z offset height.


    I've started the job.

    First layer for material 1 in slot 1 is perfect



    First layer for material 2, in slot 2 is better.



    Material 1 is again very well calibrated (0,27 to 0,28 mm actual thickness for a 0,27mm first layer height)



    Material 2 is nearly 0,1 mm lower than the material 1 first layer with only a 0,2 mm thickness. It is better than with the 3d Solex Hardcore



    So, actually, with no bed leveling, the situation with the Ultimaker printcores is better.

    I haven't done any other print in these conditions to confirm.


    Still the issue from my previous test with 2 Hardcores manually calibrated at working temperature being not leveled is there.


    Remember that it has been working properly before firmware 5.x.




  3. 17 minutes ago, PhantomGnom said:

    I did no additional grounding, just plugging it in, where it should be grounded by default, or should I?


    If your mains are properly grounded, it should be OK just plugin in your printer.

    Better check it.


    Remember it is a capacitive sensor who makes the bed leveling, triggered by the point where there is no more change in the electrical charge, normally when your nozzle is touching the build plate.

    But if you saturate your sensor, reaching a plateau, before your nozzle actually touches the build plate, it will trigger the sensor.

  4. @CarloK

    I have made the test print of a Benchy with the same materials as before, but with a 0,27 mm first layer height.

    Project file attached.UM3E_3DBenchy.3mf


    Before printing, I have done the following :

    - 3d Solex Hardcore AA with 0.6 mm nozzle set in slot 1

    - 3d Solex Hardcore BB with 0.4 mm nozzle set in slot 2

    - Made a cold pull in both print cores -> no material left in the nozzle.

    - Factory Reset, skipped the steps.

    - Cura Connect Reset

    - Lift Switch calibration

    - Switching Test done -> OK, see video from my previous post

    - Bed leveling Frequency set to 'never'

    - Set Build plate Temp to 80°C (working temp for the job) waited it to stabilize

    - Set the 2 printcores temp to 240°C (close to working temp for the 2 materials)

    - Manual bed leveling with a sheet of paper, just gripping slightly the paper. I made a specific attention to the Z offset height.


    I've started the job.

    First layer for material 1 in slot 1 is perfect




    First layer for material 2, in slot 2 is too close to the bed, but thanks to the very thick layer height, it has extruded.




    I've aborted the job after the second layer with the material 2.




    I have measured the first layer thickness for each material


    Material 1 is very well calibrated (0,24 to 0,27 mm actual thickness for a 0,27mm first layer height)




    Material 2 is nearly 0,2 mm lower than the first layer with only a 0,08 mm thickness.



    As the bed leveling was done with the print cores and bed hot, dilatation of the hardware has been already accounted.


    As only a manual bed leveling was done, no sensor, nor springs stiffness is involved.


    And the test is not brand dependent, as all the calibration was done manually with the printcores and bed at working temp.


    To me, the only way to introduce this bias is the firmware.


    Here's the printer logs

    UM3E Logs.zip


    Thanks for your feedback !

  5. 13 hours ago, CarloK said:

    How do you perform the Welcome setup steps? Do you execute the steps where you have to load the printcores? I always skip all the steps.


    Yes, I skip the whole Welcome setup steps. My printers are connected via Ethernet, so no need to go through that process.


    13 hours ago, CarloK said:


    I suspect a problem with the switching bay settings. I know you calibrated this but I've seen it fail and couldn't reproduce it.

    In the maintenance/diagnostic menu there is a 'switching test'. Can you execute the test for switching the second nozzle? Are these running good? Is the right nozzle actually moving down and up?


    Here's the video of the switching test. Works like a charm.




    @CarloK I am currently making a print with the benchy attached previously. The only change will be the first layer height set to 0,27 mm (default).

    I let you know and provide the logs.

  6. 12 hours ago, CarloK said:

    @V3DPrinting I'm sorry to hear about your problems.

    First, yes it is possible to downgrade the software to v4.3.3. Attaching the document failed for some reason, but it was also discussed in this thread.


    @CarloK Thanks for the link. That was the type of information I was looking for.


    12 hours ago, CarloK said:

    The problems you experience are most likely related to the firmware in the printer and I really like to figure out what is going wrong. I tried reproducing all the steps you mentioned but in my printer that worked correct. So, my guess is you are doing some detail in a different way than I did when trying to reproduce.


    What printcore type and diameter are you using?


    Both print core are 3d Solex Hardcore. The left one with a 0,6 nozzle, the right one with a 0,4 nozzle

    12 hours ago, CarloK said:

    What material type are you printing with?


    FormFutura TitanX on the left core, Formfutura Helios Support on the right core.

    12 hours ago, CarloK said:

    Do you use the default first layer height in Cura of 0.27mm?


    No, as the layer height was only 0,1 mm, I reduced the first layer height to 0,2mm.

    See the project file attached with a dummy model for privacy reasons.


    I had the same issue with prints using the default first layer height.


    12 hours ago, CarloK said:

    When you say you disabled the Active Leveling on the printer, then how did you do this? Did you achieve this by setting the bed leveling frequency on the printer set to 'never'?


    I first made a factory reset, then lift switch calibration, then set bed leveling frequency to 'never', then checked the distance between the bed and the tray at 14 mm, then done a careful manual bed leveling using a sheet of standard paper.


    12 hours ago, CarloK said:

    Is it possible you mail me the log files of a failing print? (hoover your mouse on my avatar picture, a pop-up will show where you can send me a message).


    I don't have the logs anymore as I've done some prints since my post on Friday.

    I need to make the whole procedure again to provide the logs.


    Attached some pics of the issue, the print cores used.







  7. 58 minutes ago, tinkergnome said:

    This sounds more like a problem with the lifting switch than with the leveling procedure?

    Does the lifting mechanism for the second print core work at all?

    And: there's a calibration function for the lifting switch in the maintenance menu, it's worth a try


    @tinkergnome That's the first thing checked. Lift switch had been calibrated and checked right after a factory reset prior to a test print.

    And the problem is on my two UM3E, so it's likely not to be an hardware issue.

  8. 12 hours ago, uncle_bob said:

    I've always run on whatever the most recent firmware is. I check for a new version about once a week. Right now I'm on the latest and greatest, version 5.2.11. The S5 is on 5.4.27.


    So you are lucky.


    I'm one of those people having and reporting issues on UM3 since the 5.2.11 on the active leveling / leveling issue.


    My concern is that with this firmware, even not using the auto bed leveling but doing a carefull manual leveling the right nozzle is not properly leveled and is always below the left one, not allowing any extrusion.


    I have been through the gcode, and there is no problem with it. So it's not linked to Cura.


    So the issue is in the 5.2.11 firmware on UM3.

  9. 1 hour ago, uncle_bob said:


    I do not see this issue on either of my UM3's. They both run with "stock" AA cores. Last time a manual level was done ... hmm .... errr .... two years ago maybe? Its been all auto level since then. Prior to the manual leveling one of them had issues with the auto level. The problems do not sound like what's going on above.



    @uncle_bob You are lucky. That was my day to day life with my UM3 before upgrading the firmware. Which Firmware version are you running ?

  10. @CarloK Is it possible to downgrade the firmware of the UM3E to the latest 3.xx version ? How and where to find the firmware.


    This would solve my issue as the printers were running perfectly before the firmware upgrade to 4.X and 5.x.


    I don't mind having the sensor test, nor an improved bed leveling, as it is not working.


    I just want to get back a reliable dual extrusion, reason why I've bought 2 Ultimaker 3 couple of years ago.

  11. I have some updates on this issue on my 2 UM3E.


    I still have the nozzle in slot 2 squeezed by nearly 2 layers.


    For some reasons, I have reverted to Cura 4.2.1 (too many bugs on 4.3 and 4.4)


    I have done a factory reset, rechecked the bed height and adjusted it to 14 mm (recommended height by Ultimaker to perform Autobed leveling), increased the spring length by 5 mm on the Hardcore, done a manual leveling, disabled the Autobed leveling.


    Then doing a dual extrusion print sliced with Cura 4.2.1. Z offset plugin is present, set to 0. and Extensive Z Offset processing disabled.


    The result is the same : nozzle in slot 2 is again 2 layers too low.


    As there is no active leveling involved, it's not a question of springs or sensors.... So the issue is in the firmware


    Remember, I had no issues printing dual extrusion with my 2 UM3E until this new firmware.


    I understand Ultimaker wants to focus on new products, but at least they should fix what they broke.

  12. On 1/5/2020 at 12:31 PM, Carla_Birch said:

    Get the same problem on my S5 thats linked via ethernet, drops in and out a lot, whats a pain when trying to check up via the video feed in the app. I have also seen that slicing and doing a preview in Cura makes connect drop out also.


    I was having the same configuration + 2 UM3E connected via Ethernet on Cura 4.4.


    Since I have reverted to 4.2.1 no more disconnects.


    I have 2 bugs opened on 4.3 and 4.4. They were said by Ultimaker team to contribute to the problem (shadow printers created in background, material issue on projects)

    @nallath told that the fix will be on 4.5. But it was before the 4.4.1 release.

  13. 12 minutes ago, ahoeben said:

    Unfortunately, due to a design flaw in the Marketplace, only one version of a plugin can be available in the Marketplace at a time.


    I've done a fresh install of Cura 4.2.1, removing the  user/Application Support/Cura folder from my Mac before making the install.

    So I should have been able to retrieve the plugin from the Marketplace, as I've done for your plugins without any problem.


    Is there any other location on macOS for Cura to store the settings and plugins ?

  14. 1 minute ago, Crystalvalen said:

     I imagine nothing has changed recently in your working area which has its own electric field that may interfere?


    No still the same for a year now.


    2 minutes ago, Crystalvalen said:

    If I do hear anything, I will be sure to let you know. In the meantime, if you find that wiping down the plate works or you come across any other solution, please do give us an update! I am sure it would be helpful to others reading in the future.


    Thanks ! If I have some more informations or a solution, I will post it.


    BTW my other UM3E doesn't have that issue though I don't care much of the glass plates.

  15. Hi @Crystalvalen


    I am aware of the connectors issue. I had to repair them on my two UM3E.


    In fact the sensor is working. A bit too well because it get somehow saturated before the nozzle touches the build plate and detects that the capacitive charge has reached a plateau -> for the printer it has triggered the right height.

    But it's in the air .....


    I have a doubt about the glass plate accumulating too much charge with the 3D Lac coating. I don't clean my glass plates that often and when printing PETG or Nylon I can have a thicker coat.

  • Create New...