Jump to content
UltiMaker Community of 3D Printing Experts

Cura Pausing For No Reason on Mac


Recommended Posts

Posted · Cura Pausing For No Reason on Mac

I have used Cura since I got my first printer 5 months ago and had no issues, I was using it with my windows laptop to slice. As I say I have never had an issue but the other day I moved my printer in to my little office area and next to my Mac, downloaded Cure (4.1.0) for the Mac, didn't change any settings apart from the initial layer heigh (which I had set to the same as my laptop) sliced an item, put the card in to my ender 3 and it started to print, it got around 3/4 of printing the brim and suddenly stopped. whilst looking to see what the problem was think something had jammed it suddenly started again, I noticed it had left a melted blob of filament where it had stopped, anyway a few mins later it stopped and did the same again, I stopped the print altogether and started again, exactly the same things happened at the same time, I then took the same design, sliced on my windows laptop and it printed fine with no issues. Now its not too much of a hassle using my laptop but would be easier to use my Mac because I simply have to swivel in my chair to set the printer up. I am new to all this 3d printing stuff but I am ruling it out as being me that is causing this issue as I have not changed any other settings other than the initial layer height or messed with the g code in anyway. 

  • Link to post
    Share on other sites

    Posted · Cura Pausing For No Reason on Mac

    So this is most likely some kind of electronics error where the arduino in your printer (I think ender3 uses marlin and arduino) is having trouble reading the gcodes but recovers.


    But to be sure you can verify that there is nothing wrong with the gcode.


    Whenever you slice make sure to save the gcode "forever".  I can't tell you how many times I've gone back to look at 1 day old, or 1 month old or 5 year old gcode files because I forgot what settings I had used for some part that someone later asks me about or that I asked myself about ("What the hell layer height did I use for this part again?").  Even better do "file" "save" as well which saves the project file which has even more information.  I alway slice and save both gcode file and 3mf file together so I can always go back and look at what I did.


    Anyway when you have a problem with a gcode file you can then take the SD card (if that's how you printed) and reverify that the file was not corrupted.  You can also examine the gcode file withe cura or other methods.  Cura let's you "play" back the gcode file and you can see exactly what the print head movement was for each layer.


    When the printer pauses, if the ender3 shows Z position, quickly write down the Z value before you forget and then you can open the gcode in repetier host.  repetier host is probably best for looking at the gcodes exactly (each line of code) and seeing where it is printing in your model.  You can go through line by line and it highlights that part of your model in 3d view on the left and highlights the actual gcode on the right of the view and you can see if there is something strange in the gcode (like an M command that does a pause).


    Or there could be 100 gcode moves all in 1mm of distance and that would simulate a stop.  This would also be obvious in repetier host (which is free by the way).


    That's what I would do.


    Anyway I suspect it's a hardware problem.  I had a printer that had this symptom and it really sucked to debug it.  Evetually I replaced two circuit boards (one with SD card reader and one with the arduino) and that fixed it.  It was very intermittent.

  • Link to post
    Share on other sites

    Posted · Cura Pausing For No Reason on Mac

    I don't think it is a hardware problem at all. It sounds like a (known) Cura 4.1 issue. Cura 4.0 is not affected, and the issue is reportedly fixed in (the sofar not yet released) Cura 4.2.

    If you have Z-Hop enabled, this could also happen mid-brim. Please try setting the Maximum Z Speed value to 5 (or so), instead of 0.

    • Thanks 1
    Link to post
    Share on other sites

    Posted (edited) · Cura Pausing For No Reason on Mac

    I was really hoping that it’s wasn't hardware and couldn’t see why it would be. Is it still possible to get Cura 4.0 somewhere 

    Edited by coreybops
    Changed reply as previous didn’t post
  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • UltiMaker Cura 5.3 stable released
        In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!
          • Thanks
          • Like
        • 30 replies
      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.

        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 18 replies
      • UltiMaker Cura Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 22 replies
    • Create New...