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Advice needed please re 8 x 4 cnc

Discussion in 'General Talk' started by David H, Nov 10, 2015.

  1. David H

    David H New
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    Hello all. I am new to CNC and bought a Robocutters 8 x 4 machine about a year ago that I am only just getting round to building. I have been hearing stories on the openbuilds forum that it may have rigidity issues. My version uses doubled up 2080 profile on the x and y axes. the latest model uses H rail instead. My questions are:
    Is it simply the case that a 3.0m long Y axis is too long for the v slot profile system or, would upgrading to H rail do the job, or is there another solution.
    Glad to have discovered OpenBuilds anyway, hope someone can help.
     
  2. JustinTime

    JustinTime Master
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    David, if the y axis is mounted to the table I see no reason why is should not be rigid. If it is not mounted solidly to the table you most likely will have problems.
     
    Mark Carew likes this.
  3. David H

    David H New
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    Thanks for that. Yes, I am seeing that the y axis should be fixed to the table, which it isnt as the design stands, so I will have to get thinking.
     

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