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View Poll Results: Which Version would you build?

3. You may not vote on this poll
  • V1 (OpenBuilds c-Beam)

    0 0%
  • V2 (8020 30-6060 Outer)

    1 33.33%
  • V3 (8020 30-6060 Inner)

    0 0%
  • V4 (8020 40-8080 Inner)

    0 0%
  • V5 (8020 40-4080 Inner)

    2 66.67%
  • None of the Above

    0 0%
Multiple Choice Poll.
Results 1 to 3 of 3
  1. #1
    Join Date
    Jan 2006

    CNC X Axis Opinion

    I am designing a CNC for light aluminum work. I have made 5 examples and cannot figure out which one to use. It's my first build/revision for all 5 of them. I like V5 the most, but it's probably the least strong of them all (Next would be V2).

    (File is Sketchup 2017)


    ---Image Order----
    • ALL
    • V1 (OpenBuilds C-Beam)
    • V2 (8020 30-6060 Outer)
    • V3 (8020 30-6060 Inner)
    • V4 (8020 40-8080 Inner)
    • V5 (8020 40-4080 Inner)

  2. #2

    Join Date
    Oct 2021

    Re: CNC X Axis Opinion

    To increase rigidity you must decrease torque where linear guides mount to frames. You also need to increase the distance between two sides of structural beams. What this translates to is reducing the total distance between the cutter and the X axis rail as much as possible, it also means the further apart the top extrusion is from the bottom one on either side of the ball screw the better for rigidity. Finally and most obviously, 40mm is better than 30mm or 20mm. You'll need to take a closer look at your drawings to determine which best fits these descriptions, and weigh it against carriage mass and cost.
    Attached Thumbnails Attached Thumbnails EX.jpg  

  3. #3
    Join Date
    Aug 2015

    Re: CNC X Axis Opinion

    if u make a cnc to look nice and have no utility , then u can use the most beauty contest components , but if u make a cnc to work with it , u need to make it the most stiffnes u can achieve with stock u have .

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