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I am looking for a cheap source for racks.

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  • I am looking for a cheap source for racks.

    I am looking for a cheap source for Boston racks.

    I am building a CNC plasma cutter 4x4 foot. This makes ball screws costly. I can also go with geared belts but I thinking with the crap from the cutter, they will not last long.

  • #2
    E-Bay?

    http://www.ebay.com/sch/Business-Ind...ack+and+pinion
    Paul A.
    SE Texas

    Make it fit.
    You can't win and there IS a penalty for trying!

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    • #3
      I think I am back to ball screws, No bearing blocks or couplers. I'll turn down the ends and build bearing blocks. 37 dollars for 1200mm. I just have t
      o figure out how to turn the ends.

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      • #4
        Go with the belts if you want a fast machine, easily built and easily adjustable system, the belt comes in rolls and costs next to nothing. Ball screws will say bye-bye quite quickly in the vicinity of a plasma cutter unless completely covered with flexible rubber shields.

        If you are adamant in using ball screws, get the end-machining from the factory, they are PITA to turn as they are induction hardened and you want to get it absolutely dead-center or you lose the benefits of the ball-screw.
        Amount of experience is in direct proportion to the value of broken equipment.

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