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OpenBuilds OX CNC Machine

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

OpenBuilds OX CNC Machine

OpenBuilds OX CNC Machine

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

OpenBuilds OX CNC Machine. A strong easy to build shop CNC router that can be sized to suit your needs. Many new features have been incorporated into the OX to make it a great router that is sure to inspire!

OX cnc machine openbuilds v-slot vslot router strong 2x4 shop
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  1. Forrest DIetrich

    Forrest DIetrich New
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    Sorry @Mopar32985, it was the advice of @David the swarmer to which I meant to refer ...
     
    #391 Forrest DIetrich, Feb 21, 2014
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  2. GrandpawB

    GrandpawB Well-Known
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    Could I use 5/16" all thread for the Z axis on the OX build? What is everyone else using?
     
    #392 GrandpawB, Feb 21, 2014
  3. The Dude

    The Dude Well-Known
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    I think my routy is using 5/16" allthread. Works great with no microstepping. Just get a very straight piece.
     
    #393 The Dude, Feb 21, 2014
  4. GrandpawB

    GrandpawB Well-Known
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    Thank you. I think I'll give it a try. If it doesn't work ~ lesson learned and move on. I'm hoping the parts store will soon stock all the parts one needs for this build.
     
    #394 GrandpawB, Feb 21, 2014
  5. GrandpawB

    GrandpawB Well-Known
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    Thank you. Bought my materials this morning. Local hardware wanted $1o each for the bearings! :eek: Got my OX 90 percent finished. Still need to order my Z axis step motor from Geckodrive.com and mount it. I absolutely can not get the play out of the Y axis no matter how much I adjust the eccentrics.:banghead: Grrr.
     
    #395 GrandpawB, Feb 22, 2014
  6. GrandpawB

    GrandpawB Well-Known
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    I found that for MY motors, 6.5 mm drill bit was a better fit.
     
    #396 GrandpawB, Feb 22, 2014
  7. The Dude

    The Dude Well-Known
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    I figured out the y-axis play issue. It turns out that the gantry plates don't line up the screws perfectly and there's just enough room for them to be assembled out of whack so much that the eccentrics don't cover the play. So the trick is to assemble them in a way that the first bolt you tighten is one of the non-eccentrics and you must push the wheel towards the v-slot while tightening. Then do the same for the other non-eccentric. Then tighten the eccentrics but make sure they are set to have the max play. Anyway, I removed 1/8" of play on my y gantry this way. It will probably slip again when pushed too hard. Hopefully I can make new plates before then...
     
    #397 The Dude, Feb 25, 2014
  8. Mark Carew

    Mark Carew OpenBuilds Team
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    OX makes its first cuts in aluminum and its looking great! :D
    With the OX being a belt driven machine I was surprised to see it how well it worked but circles are close to being round and it did the job with out a hitch.
    I used cutting oil (tapping) thats what I had on hand, I would have ran for the cooking oil but I was mesmerized on the cutting :D
    I used @Robert Hummel settings on the Name file of his OX AI build. 10 inches per minute with 1/64 step down. I can't remember looking at the time but I believe it was about 30 to 45 min cut. Mad props go out to Robert for all the help in getting me cutting aluminum. I had never tried it before and he showed me the ropes and sent me the proper bit :) Thanks bro you rock!
    Couple things to note;
    The GRBL shield does not keep the motors powered once the code is not being sent to the board so you have to keep an eye on the Z axis if your acme has a hi lead pitch. Once the motors are no longer getting commands they are unlocked and that means the Z axis can lower just from the vibration of the router being on in some cases. There is a way to get it to lock in the firmware and we need to find it.
    Chips, every where! You need to put up a couple strips of plastic or poster board or any shield materiel on the sides (inside) to keep the chips from filling up the belt track and coating the wheels. This becomes a quick realization about 5 seconds into the cut :)
    A vacuum attachment is a must.
    Your spoiler board will get oil on it, this is just a heads up really. It has to happen and its no big deal.
    So before getting to cutting any aluminum I would strongly suggest to make the side shields and the vacuum attachment you will not regret the time spent to make them.
    p.s. I know.. I know the plate is mounted backwards (I was in a hurry to get it mounted) :rolleyes:

    This proves that once you have an OX you can make more for friends and family by cutting out plate sets for them :thumbsup:

    On thing I need to figure out now is finishing of aluminum parts like this since this is my first cut. For the moment I just used a toothbrush with soap to clean out the chips when it was done. But there is a little 'rim' along the edges that needs to be knocked down. I was going to try a quick wet sanding for that a little later on.
    Some eye-candy.
    DSC03556.JPG
    DSC03550.JPG DSC03551.JPG DSC03552.JPG DSC03553.JPG DSC03554.JPG DSC03557.JPG DSC03558.JPG DSC03559.JPG DSC03560.JPG
     
    #398 Mark Carew, Feb 25, 2014
    Dave M and David the swarfer like this.
  9. The Dude

    The Dude Well-Known
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    What's the proper bit?
     
    #399 The Dude, Feb 25, 2014
  10. Robert Hummel

    Robert Hummel Custom Builder
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    That's what I'm talking about! ;)
    As for the motor problem I did a hardware fix by keeping a constant 5v on the enable pins of the driver boards.
    Have always wired that way so never ran into that issue and it may be that the sheild is turning the enable on and off.
    A simple setting in the firmware to keep this pin high "5vdc" should fix your problem ;)
     
    #400 Robert Hummel, Feb 25, 2014
  11. Robert Hummel

    Robert Hummel Custom Builder
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    For cleean up a flat surface, sanding block, wet sandpaper "800 grit" and dish soap.
    Light handed sanding in 1 direction and for the edge simply bend off and sand on a agle if you want to keep the tool marks ;)

    I am also working on a build for a tumbler that uses 1-3mm bb's as the tumbling medium :)
     
    #401 Robert Hummel, Feb 25, 2014
    Mark Carew likes this.
  12. Robert Hummel

    Robert Hummel Custom Builder
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    It's easier to post pics :)

    image.jpg
    image.jpg
     
    #402 Robert Hummel, Feb 25, 2014
  13. Mark Carew

    Mark Carew OpenBuilds Team
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    Thanks Robert I had intentions on posting that bit picture :D
    Thank you
    sounds like an awesome build!
     
    #403 Mark Carew, Feb 25, 2014
    Derwin Palacpac likes this.
  14. Robert Hummel

    Robert Hummel Custom Builder
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    A little side note that I should have said was wax paper is your best friend to save the MDF but the oil should only leave a stain as I have not had expansion issue, just my exp some may have diff results
     
    #404 Robert Hummel, Feb 25, 2014
  15. Robert Hummel

    Robert Hummel Custom Builder
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    Awesome job bud, OX came through on this one.
    Yeh! :cool:
     
    #405 Robert Hummel, Feb 25, 2014
  16. GrandpawB

    GrandpawB Well-Known
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    Two questions for anybody:
    1) Where are you getting your pulleys for the OX NEMA 23 steppers?:confused:
    2) How do you post photos on this forum?:banghead: The image icon above asks for a URL. I don't understand.:confused:
     
    #406 GrandpawB, Feb 25, 2014
  17. SRHaugen

    SRHaugen New
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    Hi,


    I’m going to build the OX CNC Machine and I received the Vslot Profile from UK today and I’m waiting for more hardware from Partstore USA :)
    I have send the DXF file to a few mechanical workshop here in Norway to get a guote on the OX_Plates but It seems they have problem whit the .dxf file. One would like to have the file as a PDF, and another wants it in .x_t or .igs format. Is that something you ore anybody else can help me with?

    Thank you in advance.
     
    #407 SRHaugen, Feb 25, 2014
  18. Mark Carew

    Mark Carew OpenBuilds Team
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    @GrandpawB
    Give these a try: http://www.bbman.com/catalog/product/20-3P06-6FA3
    Also sent to you in the message
    We are working to have all stock updated soon for future builds. :thumbsup:
    Use the Upload a File button (bottom right) not the url image insert (top). I know its confusing and we want to fix that.
     
    #408 Mark Carew, Feb 25, 2014
  19. Mark Carew

    Mark Carew OpenBuilds Team
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    @SRHaugen hmm DXF should be easy for them to work with. Can you ask them what the error is so we can correct it? DXF is really the only way I can export them from SketchUp. Maybe someone with Autocad or Solidworks could try to import them and save them in a different format.
     
    #409 Mark Carew, Feb 25, 2014
  20. Robert Hummel

    Robert Hummel Custom Builder
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    Try asking http://www.openbuilds.com/members/derwin-palacpac.761/
    As he has had plates water jet cut and in the video it looks to be cad
    Video is posted in the OX AI build
    http://www.openbuilds.com/threads/ox-ai.361/page-3#post-2488
     
    #410 Robert Hummel, Feb 25, 2014
  21. GrandpawB

    GrandpawB Well-Known
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    Thanks again Mark.
     
    #411 GrandpawB, Feb 25, 2014
  22. Mark Carew

    Mark Carew OpenBuilds Team
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    Welcome :)
     
    #412 Mark Carew, Feb 25, 2014
  23. mihaib

    mihaib New
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    Hello
    Regardind the lateral plates for OX, what thickness thet have if they was make from iron? at a plasma cnc machine
     
    #413 mihaib, Feb 25, 2014
  24. asb_79

    asb_79 Well-Known
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    This is an awesome, clean design and is next on my build list. I have ordered most of the hardware and now just waiting for the rails to come back into stock before I can get started.

    I had the Gantry plates waterjet cut here in Australia from 6mm Aluminium, they turned out very well. I cut 4 frame corner connecting plates at the same time to better utilise the material. When my eccentrics arrive I'll verify they fit properly in the holes. The holes seem to measure ok though.

    If you are having a hard time finding/making the Gantry plates send me a message and I'll see if I can help.
     
    #414 asb_79, Feb 26, 2014
  25. The Dude

    The Dude Well-Known
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    I exported the files from sketchup to obj format(I think) and then imported into Blender. From there you can get IGES, STEP, STL, VRML, dxf, dwg, etc etc. Sketchup is the ultimate incompatible format, worse than MSOffice. They force you to use windows to run their program and then force you to upgrade to pro to get your data out in other formats. They give you a limited trial version for free and then lock you out after so many uses. There are dozens of free programs that do everything sketchup does (and more) and they use formats that aren't proprietary.
     
    #415 The Dude, Feb 26, 2014
    brucewestfall and ThierryM like this.
  26. GrandpawB

    GrandpawB Well-Known
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    Just ordered my pulleys from http://www.bbman.com/catalog/product/20-3P06-6FA3 (Thanks again Mark) Had to buy 6 to meet their minimum order of $35.00. Only need 3. Total cost w/shipping was 55.80.:jawdrop: If anybody needs 3 pulleys for their OX build I will have 3 I don't need and would sell for $27.90 w/free shipping. (Paypal preferred) These are the GT2 3mm as in the parts list for the NEMA 23 steppers.
     
    #416 GrandpawB, Feb 26, 2014
  27. Mark Carew

    Mark Carew OpenBuilds Team
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    That because you need pro to get proper exporters, like most cad system.
    I have to respectfully disagree @The Dude . :p The only limit are the exporters and you can't blame them for wanting to sell that aspect of the program. Most will be using it for commercial at that point anyway.
    I was teaching AutoCAD when I found SketchUp (back when @last owned it) I loved its intuitive gui and ease of use. It took me a little while to break of of the box of doing things one way, but I am glad I did. Sure there are a lot of features that need to be added (parametric) to make Sketchup better and I am hopeful they will be in time. I also believe in the right tool for the job and most cad packages are over kill for the work most of us do in them for hobby/shop use. If I was designing a complex injection mold for a company I would use solidworks or the like. But for modeling up a quick build of a machine, where all I really need to do is move the components in place, Sketchup is what I would use. Honestly though over the years I have found that most complaints about the SketchUp program have people who have not taken the time to learn to use it.
    SketchUp is a free CAD system that works well for those who use it. I have tried all the new crop up of free alternatives out there since the onslaught of people wanting to learn 3D design so they can 3D pint a new stove knob and nothing comes close to the ease of use that SketchUp offers.
    If you have ideas you would like to see in SketchUp 2014 to help make it a better program you can post about them here
    https://productforums.google.com/forum/#!topic/sketchup/IbflqJjevk0[1-25-false]
    This is just my 2 cent on why I use SketchUp and it works for me. So I guess it really comes down to personal preference for the job at hand.

    @GrandpawB your more them welcome
    That's very cool of you :)
     
    #417 Mark Carew, Feb 26, 2014
  28. asb_79

    asb_79 Well-Known
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    Hi GrandPawB, I'd like to buy your Pulleys if you still have them and if you'll post to Australia.

    I checked out bbman.com, but the min order combined with their international postage option was cost prohibitive.
     
    #418 asb_79, Feb 28, 2014
  29. GrandpawB

    GrandpawB Well-Known
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    I know what you mean. Minimum order is $35.00 PLUS once you get to the shipping section you'll find they charge an additional $5.00 for residential delivery. Sorry, but the pulleys I had were sold.
     
    #419 GrandpawB, Feb 28, 2014
  30. GrandpawB

    GrandpawB Well-Known
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    2/28/14 My extra pulleys are sold.
     
    #420 GrandpawB, Feb 28, 2014
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