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C-Beam XL - increased Z-axis height above spoil board

Discussion in 'CNC Mills/Routers' started by Charles Kaross, Dec 8, 2016.

  1. Charles Kaross


    Nov 8, 2016
    Likes Received:
    Hello to all Openbuilders,
    I recently purchased the XL parts bundle and am working on a new bench for it before starting the machine build itself.
    My primary applications will be electronics related chassis, front panels and the like. Also interested in PCB milling at some point in the future, but for larger discrete components -- no surface mount or high-density packages.
    I am considering increasing the Z-axis height above the spoil board by increasing the vertical support beams by 50 - 60 mm.
    Ideally, I am looking to be able to place a 3" high aluminum chassis under the spindle to allow its top surface to be worked.
    I like the size of the machine as is, but could do with a little less X-axis travel and a little more on the Z-axis.
    Any thoughts on these mods before I get started?
    Don't want to make the machine substantially smaller, as I am looking to expand its use beyond the applications mentioned above, but would really like the Z-axis to accommodate the taller work pieces without a substantial reduction in rigidity.
    Won't be in a position to work on this project much until the new year.

    (From the middle of nowhere, S. IL)
  2. GeoffH

    GeoffH Journeyman

    Mar 11, 2017
    Likes Received:
    Hi Charles, I'm wondering whether you have made this modification by now because I have had the same idea to do this with my XLarge. My first thought was to fix 40 x 40mm Vslots on top of the 60 x 20mm Vslots that join the frame in "Y". That would give 40mm additional z travel which is an improvement so long as the rigidity isn't compromised. If you have done something, I'd really appreciate knowing about it.
    Geoff (Malvern, UK)

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