Jump to content

Extrusion width compensation in Cura?


Recommended Posts

Posted · Extrusion width compensation in Cura?

I have been doing tests with my Ender 3 printer and I am having a problem with the parts being about .5mm off. Hole placement is dead on.

Outer dimensions are about .5mm too large and inner dimensions are about .5mm too small.

In my cnc router software there is a feature that will add in an offset to compensate for tool size.

Is there a similar tool size compenstion in Cura so I can offset the extrusion along edges in or out?

I do not see any options in Cura that pop out at me as controlling something like this. I really do not want to have to manually

adjust my CAD models to compensate for this.

  • Link to post
    Share on other sites

    Posted · Extrusion width compensation in Cura?

    Configure the option "Shell" -> "Horizontal Expansion" to show as an editable feature and set it to something like -0.12 (My Ender 2 setting of choice, but be careful, as some models really do need what they were designed for like the Eiffel tower model - which I actually increased with a positive value to get everything showing as extruded in the layer view).


    I sometimes use -0.06 if designers have already built in good values into their designs.


    This is one of the best features of Cura, in my opinion.  Still fighting other weirdness in Cura, but I seem to be winning.

  • Link to post
    Share on other sites

    Posted · Extrusion width compensation in Cura?

    If your printer is in good shape and setup properly then dimensional errors on rectangular geometry should be <0.100mm Circular geometry will have a larger error, say 0.300mm smaller because FDM machines do not print circles, they print straight lines and each line in circular geometry cuts the cusp of the arc. For circular geometry you need to design this failing into your model, it is a bit suck it and see. With a well grounded printer it should not be a problem. I can hit 50 micron error easily and can get down to 30 or better but we will only guarantee 50

  • 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
        • 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...