Jump to content
Ultimaker Community of 3D Printing Experts

What is z offset doing here?


bcsteeve
 Share

Recommended Posts

Posted · What is z offset doing here?

I'm a bit confused by the Z0.9/0.75 figure because as far as I know, that's not anywhere in my settings... but it is the Z0.3 that is the concern of this topic.  0.3 is the initial layer height.  Z-offset is -0.15.  So why is the line after SKIRT not Z0.15?  The LCD on the machine also reports 0.3 during the first layer.   So my question is:  is the z-offset being ignored after whatever that 0.75/0.9 thing is?  Or is the Z0.3 really Z0.15 and the nozzle really is 0.15 lower than it otherwise would be?  

 

G1 F300 Z0.75 ;adjusted by z offset
G92 Z0.9 ;consider this the original z before offset
G0 F4500 X35.683 Y63.404 Z0.9
;TYPE:SKIRT
G1 F300 Z0.3
G1 F1500 E0

  • Link to post
    Share on other sites

    Posted · What is z offset doing here?

    If I'm to assume that it is correct and not being ignored, then I my best guess is that G1 physically moves the nozzle to 0.75 and then G92 tells the machine that it is at 0.9.  Following that, the next G1 has the machine move to what it THINKS is 0.3, but is in fact 0.15.


    If I have that right, is the .9 figure arbitrary?

    • Like 1
    Link to post
    Share on other sites

    Posted · What is z offset doing here?
    5 hours ago, bcsteeve said:

    my best guess is that G1 physically moves the nozzle to 0.75 and then G92 tells the machine that it is at 0.9.  Following that, the next G1 has the machine move to what it THINKS is 0.3, but is in fact 0.15.

    This is correct, as explained here:

    https://github.com/fieldOfView/Cura-ZOffsetPlugin

     

    If this approach (which is fast and efficient since it only needs to add a couple of lines to the beginning of the G-code file) does not work for your or your firmware, then there is the "Extensive processing" option that actually goes through the whole G-code file and changes all the Z values.

  • 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
     Share

    • Our picks

      • Ultimaker showcase | April 2022 | 4pm CEST | 10am EDT
        I'm excited because I've personally produced this showcase event, so if you are curious what else I'm up to nowadays, come check it out and say hi in the chat! It would mean a lot! 
          • Thanks
          • Like
        • 4 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 11 replies
    ×
    ×
    • Create New...