Thread: Level Y Axis

  1. #1
    Gents,

    Now that me machine is running, not 100% but running I thought I would check how level it is. It was suggested that I purchase a DTI clock which I did and began to check the Y Axis. The following was noted and I would be greatful of feedback comment.

    I have installed 4x80x40 alu sections to help stiffen/support my sacrificial bed. The supports are at 170mm ctrs so I check at these settings.

    0, 170, 340 and 510mm ctrs

    0=0 in the DTI clock.
    170mm on the Y = 1.36mm
    340mm on the Y = 1.48mm
    510mm on the Y = 0.75mm

    If I were to level 0 and 510mm this would still leave 170 and 340 out. I am assuming that the supporting Y rails are deflecting causing the readings above.

    Im a total novice to CNC but work within Architecture therefore undertand some things.

    Any guidance would be apprecaited. Who ever said that having a hobby CNC would be easy.

  2. #2
    Don't bother about it, it's less than 100mm :whistling:

    No seriously you will always have some errors on a build like a gantry, the answer is to machine your sacrificial board in situ to flatten it.

    Someone put a program on here I think to do just this [ or may have been on the Vectric forum ] you just plug in max travels and depth of cut and it goes all over the bed and takes a shaving cut.

    [Edit]
    Or use the surfacing wizard in Mach.
    John S -

  3. #3
    John,

    Surely machining the SF bed will only provide me with a dished SF bed? If 1-2mm seems ok then I will do me best to limit this as much as I can. I am only cutting throught MDF, plastic and die bond so I guess deeper cuts are what is required. If 3d controuring then I will have to try my best to take this into account.

  4. #4
    Yes the bed will be dished but not dished in relation to the Y.
    It will be dished in relation to the base but parallel to the Y.
    John S -

Similar Threads

  1. Entry level Probe
    By Leadhead in forum Probing, Digitizing & Scaning
    Replies: 5
    Last Post: 09-10-2013, 07:55 AM
  2. help needed going to the next level
    By luke11cnc in forum Computer Software
    Replies: 8
    Last Post: 20-09-2012, 08:53 AM
  3. setting the lathe up perfectly level on floor, really?
    By onecut in forum Lathes, Lathe Rebuilding & Conversions
    Replies: 2
    Last Post: 25-06-2012, 05:11 PM
  4. Which end mill to level my acrylic bed?
    By HankMcSpank in forum Tool & Tooling Technology
    Replies: 18
    Last Post: 03-02-2012, 02:57 PM
  5. NEW MEMBER: Just joined, hobby level
    By cncgcg in forum New Member Introductions
    Replies: 12
    Last Post: 03-12-2011, 02:32 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •