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YAOR (Yet Another Openbuilds Router)

Discussion in 'CNC Mills/Routers' started by winand, May 30, 2014.

  1. winand

    winand Veteran
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  2. GrayUK

    GrayUK Openbuilds Team Elder
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    I found this CNC Glass cutter on You Tube. Check it out.


    I've seen the cutter being made somewhere on the tube. They also make a cutter for cutting plastic. Trouble is I can't remember where.

    Gray
     
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  3. RIDVAN ARIK

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    Hi Gray,
    I see youtube.It is mirror cutting machine.I thing can make this machine.

    Thank you very much.I am serching this machine parts,project details e.t.c.
     
  4. GrayUK

    GrayUK Openbuilds Team Elder
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    Can anyone remember the name of the CNC company that makes those rotating blade accessories?
    They use them for sign writing, and they also have another one with a roller for putting folds in DIY cardboard box construction? :rolleyes:
    I've seen them on YouTube, but I just can't remember their name. :banghead:
    Gray
     
  5. Tweakie

    Tweakie OpenBuilds Team
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  6. GrayUK

    GrayUK Openbuilds Team Elder
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    Yep. That's the one. I've put it in Resources for future reference.

    Ta.
     
  7. mytymedave

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    Sorry if this was asked before but I did not see it in the thread.... Could you possibly share an approximate cost to build?

    Thx.... Dave
     
  8. Mark Carew

    Mark Carew OpenBuilds Team
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    I like how they have the stepper mounted like a spindle. Very cool machine idea thanks for sharing @GrayUK
     
  9. winand

    winand Veteran
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    Alright, now back on topic shall we? ;)
     
  10. GrayUK

    GrayUK Openbuilds Team Elder
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    My apologies there Winand, I fell right into that one didn't I? Got sidetracked a bit.

    So, what you been up to? What you been making? Any probs?
    How is the Kress performing? Still a good decision?

    Gray
    P.S.
    For anyone else, reference, off topic!
    START A NEW THREAD! START A NEW THREAD!
    (Me Included)

    We like NEW threads!
     
  11. winand

    winand Veteran
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    At this moment, i have moved the machine to my (studio-)apartment to be able to use it a little more frequent. (yes i know, not ideal..)
    I seem to have some troubles which i want to work out.
    Mainly i've been cutting plywood from 6 to 12 mm thick, i experienced the following;

    - Cutter leaves burn marks on the wood and will evenually "burn" / ruin itself.
    I've tried to hold a power vac near the cutting area for cooling, that helps, but i need to slow down both the spindle speed as well as the XY speed a lot.

    - Gantry seems not rigid enough.
    After cutting some testpeaces of plywood on different feedrates (a simple straight line).
    I found that the faster the feedrate, the more of a "curve" it makes in the first part of the straight line.
    I'v "solved" that now cut down the feedrate drastically and more important, the cutting depth to only 2mm (with 4mm 2-flute)
    Cutting takes forever now..

    When twisting the gantry by hand, it feels very rigid, but there's a bit of flex when applying som edecent force.
    Difficult to tell what is flexing though, my guess is that the Openbuilds gantry plates are too thin and are bending a bit.
    I'm thinking of upgrading the machine a bit, hoping to cure this:

    - Using double gantry plates
    - Using double X-axis rail like on the OX

    Any tips are welcome..

    *Whisper* a 3d printer build is in preparation :)
     
  12. Tweakie

    Tweakie OpenBuilds Team
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    Regarding the burn marks - as you have discovered, you either need to reduce the spindle speed or increase the feed-rate.

    Tweakie.
     
  13. winand

    winand Veteran
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    Indeed, i did both. I don't know what my feedrate is right now, but it's awfully slow. Kress (1050-1) on number 4..
    (and in this setting it works ok with a vac and a little patience..)
    Could turn both up, but then i run into accuracy problems, so that's my biggest concern right now.
     
  14. Tweakie

    Tweakie OpenBuilds Team
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    I know exactly what you mean - it is really all a compromise. :)

    I often V-Carve hardwoods and getting the feed-rate high enough (to avoid the occasional burn marks) is a compromise against the strength of my machine.

    Tweakie.
     
  15. winand

    winand Veteran
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    While i'm planning to build my own 3d-printer now (already ordered all the parts), i also will upgrade my CNC router a bit.
    The biggest issue i have with it is (a little) flex of the gantry plate from left to right, and more flex due to the single 60x20 extrustion which is used for the x axis.
    I will:
    - Double the gantry plate and glue the two with epoxy to stiffen it up.
    - Add another X axis 60x20 extrusion which the gantry rides on (just like with the ox)
    Once this upgrade is done, pics will follow ofcourse ;-)
     
  16. GrayUK

    GrayUK Openbuilds Team Elder
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    Hi Winand.

    You might consider putting two 20x20 lengths of v slot between the two 60x20s. Put one at the top, or near the top, and one at the bottom. Fix them all together, creating a very strong, and non flexing, X axis without a great increase in weight. You could sit your cable chain nicely in the slot at the top as well. :thumbsup:

    Of course this will mean some adjustments with the Gantry plates, maybe just some extra holes?
    But seeing as how you have a machine up and running you can always cut your own new modified parts out of Garolite to start with.

    Get it built and then make some nice aluminium plates. :thumbsup:

    There are plenty of plans available to adapt, or someone might even design the plate plans for you. :D

    Gray
     
  17. winand

    winand Veteran
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    Thanks Gray!
    I think adding extra extrusion in between will stiffen it up considerably,
    but for the current gantry plates it's too bulky. Maybe on a next upgrade :cool:
     
  18. slittle

    slittle Journeyman
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    Now there's your vertical Murphy in action 3 wheels and all Nice Job Winand and I liked your rubber leg mounts. Also the supports you installed looks rock solid!
     
  19. winand

    winand Veteran
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    Finally i made an rigidity upgrade to my CNC machine.
    I found that it did flex a bit too much, the x axis beam was not rigid enough to my taste.
    I now have doubled this beam, so 40x60mm instead of 20x60mm.
    I glued two 20x60mm beams to eachother using 2 component epoxy resin.

    DSC_0003.JPG

    It was crucial that top and bottom were absolutely flush ofcourse(!)
    After that i extended the carriage and put 4 extra wheels.

    DSC_0007.JPG
    (excentric nuts now at bottom, moved them to top later for better accessability)

    I also doubled the Gantry plate which was flexing a bit when forcing the router up and down. (see picture above, right plate is double now)
    These to upgrades help a lot making everything stiffer.
    Hopefully i can route plywood a lot quicker or deeper now while keeping accuracy :)
    (and start trying milling some aluminium..)

    However, the flex i still notice seems to come from the wheels itself.
    Even one wheel bearing has too much play i found out.
    Guess replacing this bearing and upgrading the wheel to Xtreme solid wheels or even metal
    wheels could solve this.. next upgrade? ;-)

    DSC_0008.JPG

    DSC_0009.JPG
     
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  20. dddman

    dddman Master
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    Starts to look like an OX! :)
     
  21. winand

    winand Veteran
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    Yes it does :D
     
  22. Ronald van Arkel

    Staff Member Resident Builder Builder

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    Naa, it's an Routy Ox YAOR! :ROFL:

    But great, finally something less boring then and O X, keep the ideas coming! ;) To reinforce plates, use 20*20 or 20*40mm V-Slot (serves as cable guides as well).

    -Ronald
     

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