What is your opinion of MaxNC mills? - Page 5


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Thread: What is your opinion of MaxNC mills?

  1. #49
    Registered speedtwin69's Avatar
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    I have a old MaxNc 10 ,Gecko 540 ,280 oz. Steppers and I cut all kinds of metal on it.
    i replaced all the backlash nuts with bolt on brass nuts and it cuts a lot better.
    I can cut through .5 x 1.5 flat bar in mild steel in 10 minutes @ .04 a cut 4 imp.
    Just mounted an old set of 8" calipers on the Z axis and seems to have .0015 in backlash. I am considering remake it in 4140 at work on my haas vf3 . Ball screws and the works. McMaster Carr has them fairly cheap.



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    hey have ball screws in 1/4 in? can you post a link?



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    The ball screws I am referring to in the McMAster Carr .375 dia. 8 pitch.
    Sold in 24" stalks $79 or by the inch.
    Ball nuts are $83 a piece I think. I look at the clearance on the Maxnc and I think they would work. The ball nuts look fairly large though,maybe modify them or the mill.



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    You're referring to the ones on this page:
    McMaster-Carr ?

    I don't think these are really what you want for a milling machine, even a MaxNC. The accuracy of the screw itself is only +/- .004" per foot (or per turn, it's hard to figure out what they're talking about), and then there's .015" of play between the screw threads and the nut.

    Ball screws are used for lots of things, such as garage door openers, and many of them don't require much precision. Yes, ballscrews are also used for milling machines, but those are made a lot more precisely, and they are preloaded to remove the play (aka backlash) that these have a lot of. They also cost a lot more. You're probably looking at over $1000 for a set of zero-backlash ball screws and nuts that would hold +/- .001" over the length of an axis, and it would take considerable work to fit them into a MaxNC.

    Andrew Werby
    ComputerSculpture.com — Home Page for Discount Hardware & Software



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    I found some 6mm ball screws today .240 with a ball nut of .380 which is .005 over the Maxnc nut dimension.

    These have to be better than 1/4-20 all thread.



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    Thumbs down

    Quote Originally Posted by awerby View Post
    They're baaack! The original owner, Otto Echevarria, sold it to a guy named Chris a few years back, but Chris couldn't make a go of it. So Otto started it up again with a new website - I guess he lost "maxnc.com" in the deal, so he's now at http://ximotion.com/ (Note: this is not an endorsement of them or their products).

    Andrew Werby
    ComputerSculpture.com — Home Page for Discount Hardware & Software
    Thank you Andrew for the Update..I would like to share my experience
    with " MaxNC" In one word.. HORRIBLE..!! I purchased a CnC Router and
    controller , It was the worst product that I ever experienced.
    Irregardless of who owns this Company then or now.
    I would Highly recommend staying away.
    There are a few new Company's out there Ie: ZenBot..K2..etc
    That look like a much better way to go, And for anybody thinking
    about doing light to med Aluminium machining, don't even bother..
    They will tell you , "you can do any type of machining"
    this absolutely false.. I personally lost $3500. and countless hrs
    of time..:-(.. I hope this helps with any new guys thinking
    this is the way to go ,,As they say.." in my own opinion" I would
    not ever purchase anything from this rehashed company ever again..




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What is your opinion of MaxNC mills?

What is your opinion of MaxNC mills?

What is your opinion of MaxNC mills?