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Desktop PCB Maker

Discussion in 'CNC Mills/Routers' started by PhotoSgt85, Jan 31, 2017.

  1. PhotoSgt85

    PhotoSgt85 Veteran
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    PhotoSgt85 published a new build:

    Read more about this build...
     
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  2. Steve Mc

    Steve Mc Well-Known
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    Will be watching this build with interest. I'm currently putting together a C-Beam with the same primary function of milling PCBs in mind with the added advantage of being able to cut plates for a much larger machine later when I learn enough. Also had in the back of my mind the possibility of adding the 3D printing and laser capability to it later on as well. Nice to see someone else with similar thinking.
     
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  3. PhotoSgt85

    PhotoSgt85 Veteran
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    I just finished a C Beam XL build so capacity isnt what I need. My lab makes a lot of custom PCBs that we currently do with photo sensitized boards. I wanted a machine that fits easily on a desk (or workbench as it were) that could produce the same quality boards without the time investment, as well as drill holes for the through hole components. If you are watching this expect that I will add some form of containment as I imagine being in the same room as this would be a bother if you had to breathe in all the dust. Thanks for commenting!
     
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  4. Steve Mc

    Steve Mc Well-Known
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    Out of interest, have you tried milling a board on the XL? Just wondering how suitable a C-Beam would be for this
     
  5. PhotoSgt85

    PhotoSgt85 Veteran
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    I haven't yet, just finished it yesterday and have only done one thing on it, which was to run a simple g code file through it. So the lead screws move the nuts 8mm per revolution, so if you divide your stepper driver steps per revolution by the 8mm you should get the displacement per step. if you are using something like the A4988 stepstick you are eighth microstepping (8 microsteps per step). On a 1.8 degree per step motor (fairly common) you have 200 steps per rev, so 1600 microsteps per revolution. With that you would have 200 steps per millimeter, or .005 mm theoretical resolution. I say theoretical because there is error due to backlash and the possibility that your stepper could lose a step.

    To answer your question though I see no reason why it wouldn't be accurate enough, so long as care was taken in setup. I dont have any PCB bits currently, but once I have one Ill run a test. I am going to be looking into bits that I can use my Dremel with this build.
     

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