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Double or not ??

Discussion in 'CNC Mills/Routers' started by Dale Y, Dec 14, 2016.

  1. Dale Y

    Dale Y New

    Jun 20, 2016
    Likes Received:
    I see machines that have double plates (one on either side) of the beams with the pulleys, and other with just one plate. Looking for pros and cons, as well as experiences for those options.
  2. Gary Caruso

    Gary Caruso OpenBuilds Volunteer
    Staff Member Moderator Builder

    May 19, 2016
    Likes Received:
    The idea is to add some stiffness to the wheels on the Y axis. Would be interested to see if anybody has data on how much improvement it brings..

    The drawback is it makes securing the Y rails to the spoil-board impossible if the plate secures the lower and upper wheels together.
    IMO this is probably more important on longer Y axis machines, like 1000-1500mm machines (securing the rail to the board to prevent side to side movement). Another issue is having the plates makes side shields more difficult (not impossible) to add.
  3. Jestah

    Jestah Well-Known

    Dec 4, 2013
    Likes Received:
    Makes the wheels MUCH stiffer as they are supported from both sides rather than being cantilevered. The down side is that you can only mount your bed to the main table linear rails at the very ends. If you have a heavy router or a very solid table I am not sure the trade off is worth it as connecting the main beams to the table can make the them VERY stiff.

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