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  1. #1
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    Mar 2005
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    10

    Better Quality Limit Switches

    I have a homebuilt CNC router I've been using for about 3 years now (I think). I got some of the cheapie uxcell plunger limit switches off of Amazon and they work...ok. It would be nice to have a little better repeatability though. Haven't really tested, but I'm guessing these vary by 10-20 thou when you home the machine. Maybe little more, maybe little less.

    Anyway, when I look I seem to find only 2 types: junkie ones like mine or super expensive ones that repeat to 5-10 microns. Anybody found some affordable ones that might let me repeat home to around a thou?

    Thanks,
    Wally

  2. #2
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    Mar 2005
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    Re: Better Quality Limit Switches

    OK, I *did* in fact do a search before I posted, but didn't find anything. Then the similar threads list led me to some past threads. Based on those, the AAP2T35Z11 seems like a good candidate. Anybody used them? What kind of repeatability are you getting?

    Thanks again,
    Wally

  3. #3
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    Jan 2009
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    28

    Re: Better Quality Limit Switches

    Hall Effect switches ftw! Easy DIY project and cheap too.

  4. #4
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    Nov 2007
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    449

    Re: Better Quality Limit Switches

    What about the inductive type you find on 3dprinters for bed leveling. Super cheap, repeatable accuracy, and reliable.

  5. #5
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    Jan 2009
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    28

    Re: Better Quality Limit Switches

    This thread has everything you need to make your own, very accurate, Hall Effect limit/home switches: https://www.cnczone.com/forums/open-...cnc-forum.html

  6. #6
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    Nov 2013
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    1121

    Re: Better Quality Limit Switches

    Hi,
    I've been using these switches for years for limit and home switches. I get 0.02mm repeatability when used as home switches.

    https://nz.element14.com/omron-indus...a/dp/150034001

    Craig

  7. #7

    Re: Better Quality Limit Switches

    Balluff is a great deal to have very precise limit switches.
    Are used also in professional centers.

    https://www.balluff.com/local/us/productfinder/#/ca/A0001/cg/G0113/product/F01332/variant/PV146833

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