Welcome to Our Community

Some features disabled for guests. Register Today.

Tramming questions

Discussion in 'CNC Mills/Routers' started by Scotty Orr, Feb 6, 2018.

  1. Scotty Orr

    Scotty Orr Master
    Builder

    Joined:
    May 21, 2015
    Messages:
    269
    Likes Received:
    131
    I just surfaced a spoil board on my MMXL (very similar to a C-beam machine). I used a pocket cut, so it was very easy to see tramming issues in both X and Y directions.

    My router is a Makita mounted in the OB spindle mount with a 3D-printed adapter.

    So my questions have to do with where to make adjustments.

    To correct for ridges in the X direction, should I shim the Z-axis assembly or the X gantry?
    To correct for ridges in the Y direction, should I rotate the Z-axis assembly or just the spindle mount? EDIT: Found the problem for these ridges. (Answer is rotate the whole assembly.)
    Or can I just shim inside the printed router?

    BTW, the ridges are not huge (the Y ridges are biggest).

    Thanks,
    Scotty
     
    #1 Scotty Orr, Feb 6, 2018
    Last edited: Feb 6, 2018
  2. Scotty Orr

    Scotty Orr Master
    Builder

    Joined:
    May 21, 2015
    Messages:
    269
    Likes Received:
    131
    Found the problem with my Y-direction ridges. Now that the table is surfaced, A square shows the Z-axis C-beam is obviously not square to the table. I'll have to rotate it into square.

    I suspect that shimming the lower edge of both ends of the X-axis C-beam is what is needed for the X-direction ridges.

    Was hoping not to have to disassemble that much stuff.....
     
  3. GrayUK

    GrayUK The Secret of Life is ..... Choice!
    Staff Member Moderator Builder

    Joined:
    May 5, 2014
    Messages:
    1,304
    Likes Received:
    407
    Scotty Orr
    Perhaps a "Note to Selves" would be:- :rolleyes:
    Check, and double check, all levels and squares, as you progress through the build. :thumbsup:
    I know I've been caught myself with similar problems, and they could have been so easily sorted at the time. :cry:
    Being Pedantic can sometimes be a good thing when building a CNC.
    Anyway, glad you found the problem and can get it sorted. :)
     
  4. Scotty Orr

    Scotty Orr Master
    Builder

    Joined:
    May 21, 2015
    Messages:
    269
    Likes Received:
    131
    Yeah. Part of the problem was I originally assembled it on a surface that was pretty uneven. I later moved it to a more level surface, and readjusted the build - but I failed to check the tower. :banghead:

    I am doing a full rebuild soon (to expand/modify it), and I will build the new version on a torsion box. Unfortunately, I've got to use it first to cut a few parts for the modifications - so........
     

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