Hacked Gadgets Forum

November 2, 2006

Aaron Bowser’s CNC Machine

at 5:53 am. Filed under Complex Hacks, Computer Hacks, Electronic Hacks

Thinking about building a CNC machine? Hacked Gadgets forum member, Aaron Bowser has a site loaded with information on how to build one. Not only is there helpful information about his design, there is also a vast number of links to other resources.

“The mechanical design of the machine was based on a survey of CNC machine websites and on the availability of used and surplus parts. A y-axis gantry style, similar to the one used by Axxus Technologies, was selected. The stepper driver board currently used in this project was created based on the application notes from the UN5804B stepper driver from Allegro Microsystems. Each board is controlled by a step and direction signal. The UN5804B chip has been hard wired to run in half stepping mode with output constantly enabled. The UN5804 chips are only capable of driving 1.25A max current, but all of the motors that are used have current ratings above this value. In order to solve this problem, I added IRC’s IRL540 power HEXFETs to drive the motors.”


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12 Responses to “Aaron Bowser’s CNC Machine”

  1. alexander Says:

    Nice! I’m working on mine too, using parts scrounged from work. So far i have all the motors I’ll need (3+1 for a spare) some steel shafts and some linear bearings for them and some other parts and bobs.

    If your planning on making a CNC Milling Machine, here is a tip: A lot of the components can be scrounged from ANCIENT line-printers, including the controller chips. The Memorex-Telex ones are my current favorite. Just remember: Never throw away anything electronic, motor related, or motors. The plastic shell, and the other crap you can get rid of. Each printer I part out takes up a 10″ square box that I get from the post office for all my eBay stuff. The printer itself is about as big as a push-mower.

    Your local junk-shop (Thrift-stores, Salvation army, electronic surplus warehouses, Mr. Fix-IT) would be glad to help you out with purchases. When my machine is ‘finished’, I will post my log that I am keeping about it here.

    I’m shooting for a total-cost of under $800 USD. As of now, I’ve spent exactly zero dollars on it.

  2. NGinuity Says:

    Hey Aaron, I just wanted to say that this is a very neat project. I liked it so much, I am building one for myself. Right now, it is just some spinning motors interfaced with the computer. Already, I can see where I want to come up with a new board layout other than the one I have. I would like to put all of the stepper drivers on the same board, and integrate a joystick into the design, allowing for manual control of the motors through a microcontroller. This has also sparked my interest in some other designs that may be integrated into my workshop very soon!


  3. bowza Says:

    My website with details on this machine has moved to http://home.comcast.net/~bowzacnc/.



  4. Alan Parekh Says:

    Thanks, I will update the link.

  5. Darrell Says:

    Great machine!!!! It’s definitely one of the best designs out there. Simple, neat, and very attractive. I’m conducting research on building one for under $1000.00. Wish me luck!

  6. deepak Says:

    sir this topic was excellent great great of 1000times great
    can you provide the clear idea about computer numerical controller machine

  7. hany Says:

    price list cnc

  8. hany Says:

    price lict cnc from egypt

  9. ajay Says:

    mechanically i am strong enough but elect. vevy poor. but its my strong desire to make my own cnc.

    pls guide
    1- elect motor srecification
    2- computor configuration
    3- card reguired

  10. juan Says:

    quisiera saber conde conseguir las medidas para construir uno igual para hacer pcb

  11. Lester Says:


    Where are you physically located? I would like to chat with you on
    the phone briefly sometime, if you have a moment.

    I want to develop, make, and sell an inexpensive CNC machine
    built for one purpose – to precision cut marble to make art out of
    marble. Not cheesy floor medallions. Real art. Intricate. For
    walls of a home, for example. The cutting has to be pretty precise
    and computer controlled so that the result has the look of fine art.

    The machine would be sold at Home Depot or such a place, and would
    only be for the ordinary homeowner, or for one time use by a
    professional. It only has to cut one foot square tiles of marble.
    It can cut very slowly.

    I am wondering if your machine could be adapted to do the trick.
    Your machine looks too expensive, but perhaps we could develop a
    less substantial and less expensive version?

    Could I at least talk with you a bit? You can call me anytime at
    the number below. I would love to talk with you. Or if you tell me
    your phone number I can call you anytime you are available. I am
    located in Sunol, CA, in the Bay Area.

    Lester Wallace

    (925) 862-9972
    Email: Lester@ImperiumPW.com

  12. BHAVAN PATEL Says:

    please sand detels

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