Jump to content

Ultimaker 3 printhead crashes into very tall prints when finalising


glx

Recommended Posts

Posted · Ultimaker 3 printhead crashes into very tall prints when finalising

I just noticed recently that there is an issue when printing objects that reach closely to the maximum z-height of my UM3. The thing I printed is 198mm tall.
While printing everything is fine, the problem occurs when the print is finalised. The printhead moves slightly to the side, then the printer homes the z-axis that causes the build plate to raise a bit before lowering it. Since there is no extra margin the printed object crashes into the printhead. I had this happening three times recently (I don’t print that tall things often and I think it was the first time I printed something that reaches the z-limit). I honestly didn’t know what’s going on until I accidentally stood next to the printer yesterday when it happened. The times before I just heard a noise from a distance, yesterday I was like "wtf, that was that noise??". 
 

Apparently there are some more people with the problem (I asked in a Facebook-group to figure out if I probably did something wrong). 

 

The first time was a quite sturdy thing that I think even managed to damage the bed levelling sensor (at least since that time the active levelling fails at a 50% rate with triggering sometimes before the bed moves, before it was very reliable). 
 

I just "staged" a video with the thing and hitting the "lower build plate" option on the printer. 
 

I’m using the latest firmware, Cura 4.8 and the stock glass build plate.

Is there a simple fix (besides not printing such large things) that I can perform maybe in the end-g-code by myself or can this probably be fixed in some later firmware?

Maybe someone can check if that can also happen with other Ultimaker printers so it probably can be fixed :).
 

 

  • Link to post
    Share on other sites

    • 11 months later...

    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
        • 18 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...