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Co2 Laser Cutter/Engraver Rotary Attachment

Discussion in 'Laser Cutters' started by pedrofernandez, Feb 4, 2019.

  1. pedrofernandez

    pedrofernandez Journeyman
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    pedrofernandez published a new build:

    Read more about this build...
     
  2. Mark Carew

    Mark Carew OpenBuilds Team
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    Great job @pedrofernandez this looks really cool. I like how you have the freedom on this design to adjust one side up and down to allow for different bottle shapes.
     
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  3. pedrofernandez

    pedrofernandez Journeyman
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    this was a half time show idea !!! that rotary is for the franken40 and will be attached to the z axis structure but removable not permanently fixed like the k40 cube, profile is tall in order to be able to engrave large beer mugs with handles cheers..
     
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  4. CChico

    CChico New
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    Let me know how you like it when it's finished. I use a chuck rotary and I love it. A few months back I purchased a rotary off of eBay with a similar design but I found it to be too jerky, especially when the print job was done and the machine would reset to the home position, the glass would just end up flying. Could have just been me though but I returned it. When I'm done with the current build (oh so close) I'm planning on making my own chuck rotary.

    I went ahead and added a link to the eBay listing. Hey, who knows if it turns out good you could make some money selling those. @$245 each there is a nice profit margin.

    Co2 Laser Rotary Engraver cutter attachment works with K40 x700 and others! | eBay
     
  5. pedrofernandez

    pedrofernandez Journeyman
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    This is for the DSP controller, the one for the Cohesion board on the K40 Cube is all set and running with a dual stepper on series using GRBL-LPC 4 axis external driver firmware.
     
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  6. Satish Veda

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    Hi Pedro,
    Very cool! A rotary Laser tool on a Laser cutter opens up so many more applications.
    Please keep us updated. Also, can you post a pic of the Yeti tumbler, that was worked on?
    It would be interesting to see the engraving detail. TIA.
    Regards,
     
  7. pedrofernandez

    pedrofernandez Journeyman
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    Hi here is a test sample engraving over bare metal, using laserbond 100 yetitest2.jpg
    yetitest.jpg
     
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  8. GrayUK

    GrayUK Openbuilds Team Elder
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    That looks great!
    I know very little about using lasers in reality, so it begs this question.
    I was thinking the other day about reflection? Do you not have to take care of any chance of reflection from the surface of, say, glass or similar?
    I know they do make a spray material for this sort of thing.
    Do you, or will you, be using something like that?
     
  9. pedrofernandez

    pedrofernandez Journeyman
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    Normally you want to protect your self more from the "welder flash" generated at contact with the material with this lasers than a reflection, but the machine is covered with acrylic sheet on the lid and all safety precautions are taken in mind, The product used for engraving the bare metal SS is called Laserbond, Cermark, and many other brands, even CRC dry moly lube from your local autoparts will work but as well
     
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  10. papashay

    papashay New
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    how can I build this?
     
  11. joe fel

    joe fel New
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    I would like to know what size belt and pulleys he used..............
     
  12. pedrofernandez

    pedrofernandez Journeyman
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    Belts is a 200mm x 6mm close loop Gt2 pulleys are 2-40 teeth for 6mm belt ans one 16 teeth for 6mm belt 4-5x8x16 bearings a 8mm rod.
     
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  13. joe fel

    joe fel New
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    Could you please tell me the specs on the stepper motor I made a rotary but was not sure if the motor I have will effect the images. I got nema 17 1.8 degree 1.5a Could you please tell me what you used? Thanks in advance
     
  14. pedrofernandez

    pedrofernandez Journeyman
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    It should work, what controller you have? pulleys combination, and type of belt?
     
  15. joe fel

    joe fel New
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    I bought the belt and pulleys you suggested...But it seems everywhere I am reading about the steppers for the lasers they all are 0.9 degrees and I did build the rotary but it when I do something the artwork is distorted like a circle will be an oval... Any suggestions I am using the K40 with Corelaser....? Thanks for getting back to me so fast
     
  16. pedrofernandez

    pedrofernandez Journeyman
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    I use different type of controllers that allow me to change the step pulse configuration, in the case of your stock K40 M2 Nano controller that is not posible, even using a 0.9 Deg motor will cause distortion unless your round object circumference is perfectly match to the controller configuration, so you will need to distort you graphic in order to have a good result, my suggestion for you is to upgrade your machine controller with a Cohesion laser board that it is a drop in replacement for the M2 Nano and get Lightburn software, the good thing about, it is the dedicated extra stepper driver for a rotary axis and be controlled via the software, some people find the laser board a bit over price but it worth the change, also the firmware is very easy to edit and make your rotor work like a charm.
     
  17. 3DPTR

    3DPTR New
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    Where did you get the main drive wheels?
     
  18. Randy Alexander

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    Do you offer the plans to build this, i.e. 3D parts or drawings?
     
  19. Giarc

    Giarc Master
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    I see lots of questions here. Although no apparent info on the rotary axis, I noticed on his machine the website Welcome to Franken 40 Build Project - DIY K40 Laser where there is a ton of detail on the rest of the build. Good stuff! I can't wait to modify my K40.
     
  20. pedrofernandez

    pedrofernandez Journeyman
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    ill post laser cut dxf files for this
     
  21. Prometheus

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    Any update on the files for this build? Interested in the STL files for those drive wheels also as it seems all of us are ;) GREAT build!
     
  22. pedrofernandez

    pedrofernandez Journeyman
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    Hello guys Im working in a design change ill post it this week

    thanks
     
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  23. Neil Rosenberg

    Neil Rosenberg Well-Known
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    Very interesting design, I hope the files are soon to be uploaded. Eager to try it!
     
    #23 Neil Rosenberg, Sep 24, 2019
    Last edited: Sep 24, 2019
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  24. Matthew King

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    Fantastic build! One question I have, did you print the end plates or purchase them? I'd love to build this but don't have a 3D printer (currently).
     
  25. pedrofernandez

    pedrofernandez Journeyman
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    laser cut 1/4 in acrylic plates files and final design soon will be posted
     
  26. Cyberned

    Cyberned New
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    What are the main drive wheels called. I'm trying to see where I can get some to try this out.
     
  27. pedrofernandez

    pedrofernandez Journeyman
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    Hi Im on the process of making a video how to to design them for 3d print them, also an stl file will posted IMG-1830.JPG IMG-1831.JPG IMG-1832.JPG IMG-1833.JPG IMG-1834.JPG IMG-1836.JPG
     
  28. Cyberned

    Cyberned New
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    Thanks for the update. Would you provide the size of the O-Rings used in your video?
     
  29. pedrofernandez

    pedrofernandez Journeyman
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    you will need this
    uxcell O-Rings Nitrile Rubber, 40mm Inner Diameter, 50mm OD, 5mm Width and
    uxcell O-Rings Nitrile Rubber, 15mm Inner Diameter, 25mm OD, 5mm Width for the free wheels

    the pulley used is
    60 teeth Aluminum Bore 8mm GT2 Timing Pulley for 6mm Width belt
     
  30. Cyberned

    Cyberned New
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    any time line for releasing the STL file?
     

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