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The Laserbox

Discussion in 'Laser Cutters' started by mytechno3d, May 23, 2015.

  1. mytechno3d

    mytechno3d Master
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    mytechno3d published a new build:

    Read more about this build...
     
  2. JustinTime

    JustinTime Master
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    Why do you want to add a stepper to the z axis? What will it do, besides lifting the laser?
     
  3. Hytech2k

    Hytech2k Master
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    You published this build at a perfect time for me, I just received my laser and driver from Jtechphotonics. I was going to add it to my small machine and run it with Mach 3 but decided to build a stand alone system pretty much like what you have here. I like what you did for the Z, small, light, and easy to adjust the focus for different thickness materials. I am going to use a Ardunio Uno or Mega with a CNC shield to run the machine.


    Also not sure if you know this already but if you use the Z pin to output the PWM for the laser strength you can vary the laser output and engrave in 8bit grayscale. It's actually pretty cool, check out Picengrave and this build over on instructables for more info http://www.instructables.com/id/CNC-Laser-for-Printing-Images-and-Engraving-Shapeo/?ALLSTEPS
     
    #3 Hytech2k, May 24, 2015
    Last edited: May 24, 2015
  4. mytechno3d

    mytechno3d Master
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    Hello
    I want to add a stepper on the z axis to keep a good focus when i cut thick materials ( 8cm foam for example ) , you can also do it manually of course ...
    I try this , but i met some problems ( but i don't remember what kind of problems ..) so i move forward and use the spindle speed to adjust the laser power ( but i now that there is some problem with this method to engrave pictures correctly ..)
     
  5. Hytech2k

    Hytech2k Master
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    I am going to add a small Nema 17 stepper on my laser slide just so i can do engravings on 3D carvings and keep the laser in focus. Like this: merging the laser gcode with the cnc mill gcode will allow shading on 3D models.

    Your build looks great, looking forward to seeing some more pictures !!

    Thanks

    Gerald
     
    Krishnakumar likes this.
  6. Mark Carew

    Mark Carew OpenBuilds Team
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    So the relief was already carved and now he is going back and burning etching it with the laser!
    Thats really cool! I wonder if you could do the same concept with injet nozzles and topographical map carvings or face profiles for instance
    Thanks for the share
     
  7. Hytech2k

    Hytech2k Master
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    The machine he has setup has a spindle and a laser mounted to it, so he carves a shallow 3D relief first then goes back over it with the laser to shade it. The process works with grayscale depth map images. Another piece of software merges the Gcode from the 3D relief with the laser to provide shading while following the contour of the relief. And that has been done with inkjet nozzles, might try searching for one of those "How it's made" episodes, I recall them doing a piece on how topographical maps were made and if i remember correctly after it was pieced together they loaded it in a large printer and inkjet the details on...

    edit: Found it....
     
    Krishnakumar, Mark Carew and GrayUK like this.
  8. Mark Carew

    Mark Carew OpenBuilds Team
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    That is it exactly! Wow that is too cool, thanks for finding this Gerald.
    Mark
     
  9. Roger

    Roger New
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    Hi,

    What is the part/model number for your laser?

    Thanks,

    Roger
     
  10. mytechno3d

    mytechno3d Master
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    Sorry for my late answer ...
    This is a 2.8 Watt diodes from http://jtechphotonics.com/
    It s a little bit expensive , but there is no comparison with Chinese diodes and chinese drivers.
     
  11. Mark Carew

    Mark Carew OpenBuilds Team
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  12. Thurmond Moore

    Thurmond Moore Well-Known
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    I just purchased a NUBM44 bare head with driver assembly from here:

    XYZ Mount Modules - DTR's Laser Shop

    6.8W at full power. It will need additional control to do gray scale engraving of course.

    Not bad for $235.

    Thurmond
     
  13. lunknowl

    lunknowl New
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    hi, i try to use your design .dxf to make one but somehow the size of bearing hole is too far away. the hole for motor is correct
     
  14. mytechno3d

    mytechno3d Master
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    Hello
    I will check that , perhaps is hter a mistake on this file ( i try many version ..) .
    I look at this as soon as possible .
     
    #14 mytechno3d, Oct 31, 2016
    Last edited: Oct 31, 2016
  15. Anthony Bolgar

    Anthony Bolgar Veteran
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    Very nice clean build.
     
  16. lunknowl

    lunknowl New
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    can i get the update files for this?
     

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