Welcome to Our Community

Some features disabled for guests. Register Today.

Link to Calibration How-To

Discussion in 'CNC Mills/Routers' started by Darwin A Garrison, Jan 31, 2021.

  1. Darwin A Garrison

    Darwin A Garrison Well-Known
    Builder

    Joined:
    Jan 22, 2019
    Messages:
    43
    Likes Received:
    25
    Good morning:

    I thought I saw a post recently about how to do calibration with the INTERFACE or CONTROL recently. However, I've tried doing several searches of the forums and haven't found it yet.

    Am I just imagining this or can someone share a link with me to the article? I'd really appreciate it. I have an X-axis offset that I'm troubleshooting and I wanted to do a full machine calibration.
     
  2. sharmstr

    sharmstr OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Mar 23, 2018
    Messages:
    2,027
    Likes Received:
    1,425
  3. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Mar 1, 2017
    Messages:
    13,448
    Likes Received:
    4,033
    And a video on our YouTube channel

     
    Darwin A Garrison and sharmstr like this.
  4. Darwin A Garrison

    Darwin A Garrison Well-Known
    Builder

    Joined:
    Jan 22, 2019
    Messages:
    43
    Likes Received:
    25
    Thanks, guys! Both answers helped, especially the video link, Peter, as that was what I remembered but couldn't find.

    In calibrating, I found that all axis were off by 1mm, weirdly. Checked my ruler with my micrometer and found that the ruler was actually pretty good, so it was a true 1mm off in all axis.

    I also found a disparity in the two Y rails of about 2 mm after all my running. I reviewed the wheel tension and reset them all, as I found some had gotten too tight (?). Checked the system for play and found nothing appreciable.

    Post-calibration checked all axis and found them on target and repeatable. I will re-run a version of the program I ran yesterday to correct some issues with edge clearances and see if the X/Y axis steps repeat. The Z-axis is not critical per se on this cut, but I did have issues with not completely cutting through. This may help.

    I also question my use of the brush-type dust shoe. I got one with 3" bristles instead of 2.5" bristles. My prior worry had been movement of the workpiece, but that does not seem to have happened. However, I am now concerned that it may be affecting the Y-axis offset via added friction/bristle binding on reversal.

    Always a continuous challenge to make sure all of the subtle details have been addressed even for simple cuts. Such is the path.
     
  5. Darwin A Garrison

    Darwin A Garrison Well-Known
    Builder

    Joined:
    Jan 22, 2019
    Messages:
    43
    Likes Received:
    25
    Success! No offsets or edge stair steps in this cut of the Positron II EPP model foam parts. IMG_4836.JPG
     
    Peter Van Der Walt and sharmstr like this.

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice