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OpenBuilds OX CNC Machine

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

  1. Mopar32985

    Mopar32985 Well-Known
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    One more photo just got my router mounted. In this config i can cut upto 1/2" material.
     

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  2. David the swarfer

    David the swarfer OpenBuilds Team
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    I have never seen these inaccuracies you speak of. Can you give the steps to repeat this effect please?
     
  3. Mark Carew

    Mark Carew OpenBuilds Team
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  4. Gadroc

    Gadroc New
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    Yea the discussion had nothing to do with SketchUCam, it seems to me either SketchUp or possibly just it's export system where they seem to crop up.
     
  5. Mopar32985

    Mopar32985 Well-Known
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    Well guys here is where im at any feedback or suggestions would be great. Im using Mach3.
     
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  6. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    "This video is private." --- Unlocking the video would be helpful.
     
  7. Mopar32985

    Mopar32985 Well-Known
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    im sorry haha its public now
     
  8. Mopar32985

    Mopar32985 Well-Known
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    Well Here is my first cut it went better than i thought it would. Cant explain how happy this makes me haha


     
  9. Robert Hummel

    Robert Hummel Custom Builder
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    Well done bud!
    Welcome to your new addiction ;)
     
  10. Mopar32985

    Mopar32985 Well-Known
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    haha thanks man. Now i just need to find an adaptor so i can use 1/8 collets in my 1/4 trim router. I need to use bits that are smaller than 1/8 at the cutting end. Also what would you guys use to cut g 10 material. Thanks
     
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  11. Tweakie

    Tweakie OpenBuilds Team
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    Mopar,

    After watching your video can I suggest that you try reducing the Acceleration (in motor tuning) for your Y axis.

    Tweakie.
     
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  12. Gareth

    Gareth New
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    I'm bummed, all the 20x60 is gone from the store.

    Also I'm not happy with the eccentric spacers in my design. They are some wacky mix of metric and SAE units which is frustrating. I wish I could just get rid of them entirely...
     
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  13. Colin Russon

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    Congratulations, great to see a self build on here!
     
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  14. Gareth

    Gareth New
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    They must have found some 60x20 in the back of the shop. I put in my order for parts.

    I did not order any eccentric spacers. I've seen a number of designs like this one from CNC Router Parts:

    Wheels are assembled into a Bogie and then mounted to the plate. Tension is adjusted with a screw and then the bogie is locked in place with a couple of bolts. The version in the video is a complex machined part BUT you can make one out of wood or ALU angle. Its not that complicated and it should reduce the cost of the machine. $26 in Eccentric spacers buys a lot of MDF and basic bolts.
     
    #374 Gareth, Feb 19, 2014
    Last edited: Feb 19, 2014
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  15. Mopar32985

    Mopar32985 Well-Known
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    @Gareth wow man that looks like a great system very clean and simple
     
  16. GrandpawB

    GrandpawB Well-Known
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    I have most of the parts for my OX build. At a stand still right now. I need the GT2 1/4" bore pulleys. Anybody have suggestions where else these can be found? :banghead:
     
  17. Gareth

    Gareth New
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    #377 Gareth, Feb 20, 2014
    Last edited: Feb 20, 2014
  18. Nick Lancaster

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  19. GrandpawB

    GrandpawB Well-Known
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    Thank you very much. Looks like just what I need. But WOW did you check the price? $12 each. Will cost $48 for four pulleys. :jawdrop:
     
  20. Robert Hummel

    Robert Hummel Custom Builder
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    Yes indeed, I will wait lol and keep looking as shipping just makes the price worse :(
     
  21. GrandpawB

    GrandpawB Well-Known
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  22. Robert Hummel

    Robert Hummel Custom Builder
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    I have two pulleys I scored at the junk shop but don't know what they are any ideas how I can go about this ?
     
  23. Forrest DIetrich

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    On Pulleys ... I plan to drill out 5mm to 1/4 inch but will not get to it for a month or so, maybe others will be in the store by then ... seems there should be enough metal in them for this enlargement.

    Need a bit of help ... anyone else cutting these plates have any problems with the size of the holes being too small for 5 mm bolts and eccentric spacers? Best way to calibrate and fix? Do I need to change the bit size (seems mine may be undersized or is cutting undersize) before I set the inside cut lines?
     
  24. David the swarfer

    David the swarfer OpenBuilds Team
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    IF the files came from Mark he probably uses a 1/8" bit which is 3.2mm. Are you using a 3mm bit?
     
  25. Forrest DIetrich

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    I bought a 1/8" bit ... but have not measured it. I did play around with bit size in the setting, but did not seem to have effect ... which is why I wondered if I need to erase and redraw inside cuts after I change the bit size setting? Holes and slots are just a bit too small, I can enlarge them, but then seems I lose the benefit of CNC milling!
     
  26. David the swarfer

    David the swarfer OpenBuilds Team
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    you do need to redraw the cut lines after changing bit size.
    measure that bit to be sure, and do some test cuts on scrap to figure out what is wrong before cutting a whole panel.
     
  27. Mopar32985

    Mopar32985 Well-Known
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    Thought I would share my first project I'm working on. It's a mini for quad frame that's cut from G10. Did a great job. Only problem I'm having is the holes are a little oblong. But the machine right now is only 1 hundredths of an inch out not bad just need to do some more tuning.
     

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  28. Forrest DIetrich

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    @Mopar32985
    Thanks, good advice which I will now follow .... live and learn! Maybe I will try another color, I am getting tired of black.
     
  29. Mopar32985

    Mopar32985 Well-Known
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  30. Mark Carew

    Mark Carew OpenBuilds Team
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    Nice job! @Mopar32985 :thumbsup: Maybe you could make a water pan to cut that G10 in so that the dust cannot escape. Something as simple as a tray with foam glued to the bottom as the spoiler. then double sided tape for the g10 and a little water. May be easier just to go with a good vac unit ;)
     
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