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Thread: Homemade grinding machine for precise work

  1. #1
    Supporting Member liberal's Avatar
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    liberal's Tools

    Thumbs up Homemade grinding machine for precise work

    In this viveo I show you how to make Homemade grinding machine for precise work. This sharpening machine will help you do precision work. I applied the motor from the washing machine. This high speed motor with speed regulation and stabilization.



    Homemade grinding machine for precise work-dsc05127.jpg Homemade grinding machine for precise work-dsc05128.jpg

    Homemade grinding machine for precise work-dsc05129.jpg Homemade grinding machine for precise work-dsc05146.jpg

    Here are quality photos https://photos.app.goo.gl/8go6m16Zqi6h1QAA7

  2. The Following 7 Users Say Thank You to liberal For This Useful Post:

    bobs409 (12-06-2019), Corm (12-09-2019), Drew1966 (12-02-2019), Jon (11-30-2019), rlm98253 (12-08-2019), Slim-123 (12-09-2019), Tuomas (11-30-2019)

  3. #2
    Supporting Member Tuomas's Avatar
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    Tuomas's Tools
    That's nice build mate!

  4. The Following User Says Thank You to Tuomas For This Useful Post:

    liberal (11-30-2019)

  5. #3
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    Thanks liberal! We've added your Grinding Machine to our Grinding category,
    as well as to your builder page: liberal's Homemade Tools. Your receipt:




  6. #4
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    That is a nice tool

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    liberal (12-09-2019)

  8. #5
    Supporting Member bobs409's Avatar
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    bobs409's Tools
    I could see that being very useful! I've already got a few good idea's in my head now... lol

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    liberal (12-09-2019)

  10. #6
    Supporting Member rlm98253's Avatar
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    Excellent design and fabrication, sir.

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    liberal (12-09-2019)

  12. #7
    Supporting Member Frank S's Avatar
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    Frank S's Tools
    Nice little arbor grinder much better than trying to use a chop saw
    Never try to tell me it can't be done
    When I have to paint I use http://kbs.justoldtrucks.com/

  13. The Following User Says Thank You to Frank S For This Useful Post:

    liberal (12-09-2019)

  14. #8
    Claudio HG's Avatar
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    Claudio HG's Tools
    Great, subscribed. Where did you get the regulator for the motor? I'm gonna make mine but if there is something ready I will go for buy instead of DIY.

  15. #9
    Supporting Member liberal's Avatar
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    liberal's Tools
    I made it myself according to this scheme

    Homemade grinding machine for precise work-controller.jpg

  16. The Following User Says Thank You to liberal For This Useful Post:

    Jon (12-16-2019)

  17. #10
    Claudio HG's Avatar
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    Claudio HG's Tools
    Nice, I love the simplicity of the circuit. It will start the motor from a shelf of around 60V and the feedback is not as precise as what would be achieved with an opamp but its simplicity is a plus, congratulations for your design.
    I have a bunch of digitally controllable dimmers (10A 240V) so my idea was to control one of them with a couple of opamp and a comparator to pick up the feedback from the alternator (used as tachometer) usually found in washing machine motors or to pick up a simple encoder (just made with a hall sensor or a photocoupler and a cogwheel) for any universal motor that do not come with a pre-installed alternator/tachometer. This would be a very versatile circuit capable to provide good speed regulation. Since I can't find this kind of drivers on the market I thought it could be of interest for others because universal motors are ubiquitous and a cogwheel+hall sensor or a simple low resolution encoder disc are really easy to add and cheap.
    Last edited by Claudio HG; 12-17-2019 at 04:35 AM.

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