Jump to content

Retracting while the head is parked seems to allow more ooze


Recommended Posts

Posted · Retracting while the head is parked seems to allow more ooze

Overall Cura is fantastic, so TYVM Daid! Below is an idea I've had while watching prints.

Using PETG I've noticed ooze flow continues, even during and after retractions have occurred. Retractions do slow down the flow of material, so it's good to use them. But if the head stays parked while waiting for the retracting to happen then small blobs of material form beneath the nozzle. Later those blobs cause more issues when the head runs back over them.

If it's possible to have retractions occur while the head is moving to its next target, I think this could improve the printing process with certain ooze-prone materials.

  • Link to post
    Share on other sites

    Posted · Retracting while the head is parked seems to allow more ooze

    Simplify3D has an option called wipe while retracting that helps a lot to remove z scar and that static retract blobs.


    Thanks for the tip on that feature. I have S3D and didn't realize it could do that. So of course today I went and experimented with that option. It opens a whole can of worms, and so far my results have not been better than the parked-head style of retraction.


  • Link to post
    Share on other sites

    Posted (edited) · Retracting while the head is parked seems to allow more ooze

    S3D default profile it's quite horrible to say the least. Even the starting gcode sucks (imo).

    Ok got some time, so I made a basic (imo) S3D decent setup. You need to adjust speed and nozzle/bed temp. Fans are configured as I would do for something not critical, they should be tuned for each job.

    Umo Plus and UM2 - Neotko basic profile

    Note that the default (machine) starting sequence it's different on this profile, since I prefer to home the head, then the bed, then move down the bed 15mm, then extrude 9mm of filament to purgue, and then it goes to print.

    And the ending gcode it will retract a total of 3mm.

    This profile it's ready for 2,85mm users (I use 1.75) so probably the Coasting/wipe, should be higher on others.

    Also this setup will retract A LOT (as it should). To disable many retractions, edit the profile and go to ADVANCED - and activate 'Only retract when crossing open spaces'. Also activate the 'Avoid crossing outline for travel movements' this second option it's like combing of cura, but on S3D you can specify how much, or less, you want your head to move around the print area.

    Edited by Guest
  • 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

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 48 replies
    • Create New...