Sagging bed

Discussion in 'Motion System' started by Nicholasav, May 14, 2021.

  1. Nicholasav

    Nicholasav Member

    Joined:
    Feb 13, 2020
    Messages:
    16
    Likes Received:
    15
    This should be somewhat straightforward -- does anyone have a solution for a sagging bed?

    I can level things almost perfectly on the X axis using calibrated toolmakers levels. Unfortunately there is no adjustment for Y, and it sags so much I see a .3mm difference between front and back probe points.

    Any advice? I don't want to just add knobs/springs to a poorly cantilevered bed, and have even considered machining my own mounts... Surely something is just out of spec, or I've missed an obvious adjustment point?
     
  2. Joe Pomo

    Joe Pomo Well-Known Member

    Joined:
    Sep 21, 2019
    Messages:
    107
    Likes Received:
    41
    My bed bracket was a little bent and it caused some issues for levelling. I initially used a quick fix, but E3D agreed to send me a replacement. After E3D replaced it, my probe deviations were =0.1mm or below, usually, but sometimes a little more.

    I have a feeling the beds are a little prone to bowing because of the thickness. So far, mesh bed levelling has had no problems taking care of it, though.

    https://forum.e3d-online.com/threads/bent-bed-assembly-or-what-am-i-doing-wrong.3698/#post-36442
     
  3. dc42

    dc42 Well-Known Member

    Joined:
    Aug 16, 2016
    Messages:
    484
    Likes Received:
    216
    You can add washers or shims between the bed and the standoff pillars, or between the standoff pillars and the bed support.
     
  4. Nicholasav

    Nicholasav Member

    Joined:
    Feb 13, 2020
    Messages:
    16
    Likes Received:
    15
    Thanks guys. Shimming should work as a good short term solution until I can remove it for proper inspection. I just really dislike shim... :)
     

Share This Page