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OpenBuilds OX CNC Machine

Discussion in 'CNC Mills/Routers' started by Mark Carew, Dec 15, 2013.

  1. Hytech2k

    Hytech2k Veteran
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    I don't use an encoder but I have a magnetic contactor that drops the current to the control board, dust collector, and router. It also sends a signal to Mach3 as a e-stop. Works pretty good for me, I get alot of power outages during hurricane season.
     
  2. Mossha

    Mossha New
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    Hytech2K, thanks for the feedback. I look forward to seeing videos of the Clydesdale in action. As recommended, I will continue to read about other builds and doing my homework!
     
  3. Mossha

    Mossha New
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    Jon, thanks for the reply. Interesting suggestions. Regarding the milling of aluminum, is a router at higher rpm(s) suitable for quality work, or is a spindle at slower rpm(s) always going to produce better results? I like the idea of a second smaller machine dedicated for aluminum.
     
  4. Jonny Norris

    Jonny Norris Well-Known
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    With aluminium, it's not the speed of the spindle although too fast will melt and not chip, it's more the torque. The bigger the spindle and more rigid the machine the better.
     
  5. Mossha

    Mossha New
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    So, if one uses a router in lieu of a spindle, more hp should in theory get better performance with aluminum? Does a variable speed router make more sense than a single speed on a CNC router in general?
     
  6. Jonny Norris

    Jonny Norris Well-Known
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    Routers are not designed for Continuous use, that I know of. A 2000w or more spindle is what I'd use.
     
    #1956 Jonny Norris, Jan 6, 2015
    Last edited: Jan 6, 2015
  7. Motions

    Motions Well-Known
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    Just wanted to bring to your attention that the standard 1/4" spacers are not in the parts list.
     
  8. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    A sufficient number are included as a part of the wheel kits to where there was no need to include any extras as a line item.
     
  9. KerryH

    KerryH New
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    It took me a moment to realize this, perhaps because the eccentrics are the only thing I do not have for my ox yet. But because of the use of eccentrics in place of some of the spacers that come with the wheels, you have plenty of spacers.
     
  10. Rhinofart

    Rhinofart New
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    Do you guys know what I would need to turn my belt system into a lead screw system? Is there a parts kit / parts list somewhere for that?
     
  11. Hytech2k

    Hytech2k Veteran
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  12. Rhinofart

    Rhinofart New
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    Beauty! Thanks. I'll hop on over to that one. Oh yeah. I went there.o_O
     
  13. Anthony Barton

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    Hi, looking at build one of these. It looks really cool!! What is the feed rate of this?
     
  14. Mopar32985

    Mopar32985 Well-Known
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    Hey guys haven't been on here in a long time. Just had a baby about 5 months ago so that has been keeping me busy. After having the OX up for about a year I'm still loving it. Just recently been adding some upgrades to it. Added aluminum plates which were a big upgrade. Also recently added a super pid controller for my Dewalt 611. Now I can control my trim router like it's a spindle. And just the weekend I added an aluminum bed to it whit more options for mounting holes.

    I haveven really been trying to push this machine and see what it can do. So far wood, G10, plastics, and aluminum has been no problem at all. I have also cut 01 tool steel and 1084 carbon still that hasn't been hardened yet. Anyway happy to be back on here.
     

    Attached Files:

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  15. Tweakie

    Tweakie OpenBuilds Team
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    Excellent work on the machine Mopar - I just love that sign. :thumbsup:

    Tweakie.
     
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  16. Mopar32985

    Mopar32985 Well-Known
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    Thanks man I appreciate it!
     
  17. Jake Fry

    Jake Fry New
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    The parts list indicates 180mm of 20x40 vslot for the z axis. However, in the video, it looks like it is 20x60. Is the parts list wrong?
     
  18. KerryH

    KerryH New
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    Ya the parts list is made with 20x40 being used on the Z-axis, however most people are using 20x60.
     
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  19. GrayUK

    GrayUK Openbuilds Team Elder
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    Mopar.
    It's good to hear some really positive things about a pretty basic, belt driven, Ox. :thumbsup::thumbsup:
    It will give others, the confidence, in the make up. :)

    When your not changing Nappies, maybe a video or two, or some more pictures of the machine, would be great.

    Well Done
    Gray
     
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  20. Mopar32985

    Mopar32985 Well-Known
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    Absolutely man will take a bunch of pictures and try to upload a video or two of the machine when I can.

    I'm very impressed with this machine since it uses the belts. Only thing I want to change now is the belts so I can get a smaller pully to get a bit more resolution. I'm running 8 micro steps but my board can handle 16 just not sure if my old computer can haha.
     
  21. GrayUK

    GrayUK Openbuilds Team Elder
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    Is it single belt, or dual?
    I've heard great things about the reliability of the 2 belt Piggyback method.
    Would be a good addition if, and when, you change belts.
    Gray
     
  22. Mopar32985

    Mopar32985 Well-Known
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    I will have to look into that not sure what that is
     
  23. GrayUK

    GrayUK Openbuilds Team Elder
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    You glue one belt inside the track, teeth up, and the other lays on top, in the usual manner, before and after the Pinion wheel. In theory the only place for stress is then between the two wheels either side of the Pinion. Reduces possible stretch, and no chance of lost steps due to belt. :thumbsup::thumbsup:
    Can anyone point Mopar in the Direction of that recent good video showing the guy fitting the dual belts? :D

    I knew I should have put that in the Helpful Tools bit! :banghead:

    Hope someone can help there. There is though, loads of discussion with regard this matter, on the forums.

    Gray

     
  24. Hytech2k

    Hytech2k Veteran
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  25. Nick W

    Nick W Well-Known
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    Hytech beat me to it. it is in the Buffalo build discussion.
     
  26. Hytech2k

    Hytech2k Veteran
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    LOL gotta be quick round here :)
     
  27. GrayUK

    GrayUK Openbuilds Team Elder
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    O.K. Done it this time. :thumbsup: I've put a copy in the Helpful Tools section.
    I knew it would be called on. :banghead:

    Many Thanks Martin.

    Gray
     
  28. ljcastellanos

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    Hi, I will like to bother your for a little help. I already assembly everything. However when I run a program the Y axis run a little bit and then get stock loosing de position. Also my z axys is bending to the front for the weight of my rotatory tool I am using a DW660
     
  29. batbat

    batbat New
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    Hi, i just started building an OX, but I'm a beginner.
    there's one thing i can't understand. the nema23 steppers are rated for 2.8A.
    the CNC xPRO for 2.5A peak. how can it handle them? even during the video
    it is shown that two of those nema23s are hooked on just one output via a terminal
    block...

    Yeah, and something else. what is the feasible router/spindle weight using this
    belt driven method? I managed to get a pretty decent spindle, but it's kind of
    heavy for the first glance: 2Kgs, so 4.4lbs. I am a bit unsure whether it was the right choice.

    tia,
    bat
     
  30. Mopar32985

    Mopar32985 Well-Known
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    Thanks for the link guyes I appreciate it. Here is a quick video of how the super pid works. This was before I mounted to my cnc.

    Super PID Controller:
     

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