Jump to content

Extruder hitting top of print at the end


Recommended Posts

Posted · Extruder hitting top of print at the end

I have been printing some tall prints recently and noticed that at the end of the print the cycle the print goes through (I have an ultimaker 3) its hitting the extruder on the top of the print.


I'm using Cura 4.5.0

Printer Firmware is

I'm printing over the network but did save a recent file;and a short video of the end of that file

UM3_VL fuselage 2.gcode DSC_3342.zip

  • Link to post
    Share on other sites

    Posted · Extruder hitting top of print at the end

    Nice wing.


    Judging by your video, I have a hunch that something is obstructing your Z axis, because there is a weird crunch about 6 seconds in as the bed lowers before the head makes contact with your print. If the z axis is missing steps, then there's a chance the head could make contact with the print even though the bed is lowered to a 'safe' position.


    Remove anything inside the machine (tools etc) that may be obstructing the bed when it lowers. Raise the bed and inspect for any debris near the z limit switch. Sometimes the nozzle prime poop can find its way in there. Also consider lubing your lead screw/smooth rods while you're at it.


    Hard to diagnose these things from afar but that crunch doesn't seem right at all.

  • 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 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
          • Like
        • 7 replies
      • 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
    • Create New...