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  1. #21
    this is my MC that i want to convert to cnc

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  2. #22
    iv got the 5 axis version of your board and im using 57BYGH76-401A steppers (at the bottom of your posted table)
    im pretty happy with them at the mo
    i get 1500mm/min on a pretty heavy gantry
    nowhere near as fast as jonathans but good enough for the price :)

  3. #23
    this is my MC that i want to convert to cnc
    not sure youll get 1500mm/min pushing that back n forth
    im guessing you will have to use belts and pullies to up the torque

  4. #24
    Out of those motors I'd go for the last one, with the biggest torque. Except your driver is only 2.5A...I think that's near enough though. Definitely get a 4 (or 8) lead motor. Your milling machine is very similar to mine and I found that when I started with 1nm motors they just didn't have enough torque to go above a few mm/s and required pulley reduction, so I upgraded to 3nm motors from Zapp, with their 70v drivers which works very well.

    By all means try using the driver you've got, it'll work and if you don't mind it being a bit slow that's fine. I do advise getting quite big nema23 motors though. They'll serve you well if you get a better driver.

  5. #25
    will they be ok with my 2.5 amp board or should i get the 3 amp board?

    Quote Originally Posted by blackburn mark View Post
    iv got the 5 axis version of your board and im using 57BYGH76-401A steppers (at the bottom of your posted table)
    im pretty happy with them at the mo
    i get 1500mm/min on a pretty heavy gantry
    nowhere near as fast as jonathans but good enough for the price :)

  6. #26
    Quote Originally Posted by blackburn mark View Post
    i get 1500mm/min on a pretty heavy gantry
    nowhere near as fast as jonathans but good enough for the price :)
    The difference here, in addition to mass, is you have nice linear bearings, not a heavy dovetail with lots of friction.

  7. #27
    Quote Originally Posted by h4ppy-chris View Post
    will they be ok with my 2.5 amp board or should i get the 3 amp board?
    They would work on 2.5A, just with slightly less torque.

  8. #28
    thanks alot guys for your help :)

  9. Chris,

    Have a look at the tutorial I wrote here... will give you some insight into your needs.... you have to start with what you are trying to move... then decide how fast you want to move it and how you are going to move it... that tells you what you need to move it with... and then you can decide what motor/driver package will work...

    BTW what mill is that? looks similar to my Warco, but older...

  10. #30
    thanks irving had a look at your tutorial it was a very good read.
    am not sure of the make of the mill no markings on it :( but would love to know.

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