CheapCNC homemade copy


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    Registered abasir's Avatar
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    Talking CheapCNC homemade copy

    Made the router below over the weekend after seeing the CheapCNC photos. Could not find MDF in my town, I just used plywoods.

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    Attached Thumbnails Attached Thumbnails CheapCNC homemade copy-dscf0220-jpg  


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    Registered WOODKNACK's Avatar
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    Holly Sh_ _! you made that In one weekend! Wow that is great! Good job! After seeing that cheap cnc web site i couldnt believe what they were getting for a price for there unit!

    My little piece of the web!
    http://users.adelphia.net/~wjdupont



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    Very, very nice job.

    Eric

    I wish it wouldn't crash.


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    looks good and quick too what kind of driver board you going to use and what type of leadscrew is that. I wish I could build something that fast mine is taking months



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    Lightbulb

    I made my own driver board (inside the black box with meter) with LM18245 (2 Amp continuous)+PIC16F624 MCU (for step/dir and microstepping).

    The leadscrew is the normal 1/4-20 stud from normal hardware shop with two nuts to minimise backlash.

    The cheap linear bearing (
    Attached Thumbnails Attached Thumbnails CheapCNC homemade copy-dscf0217a-jpg  


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    Registered abasir's Avatar
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    Lightbulb

    Additional photo to those wishing to know more.
    The router motor (Dremel equivalent) is mounted using normal TV antenna clamp!

    Attached Thumbnails Attached Thumbnails CheapCNC homemade copy-dscf0200a-jpg  


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    Registered abasir's Avatar
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    Red face

    Photo showing 'locked' nut againts the roller bearing to prevent leadscrew freeplay. Roller bearing is epoxy glued to the wood.
    Yes, the small switch is my limit switch.

    Attached Thumbnails Attached Thumbnails CheapCNC homemade copy-dscf0211a-jpg  


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    Regular pipeclamps! That's a fantastic idea. Here I am trying to drill perfectly aligned 1" holes through 1 1/4"oak pillow blocks (trying to make the pillow blocks relatively square to start with) and then you come along and in one weekend ... Why I outa...

    No really your machine looks great. Hope you don't mind if I samelessly copy your pipe clamp idea. The amount of work/frustration it will save me is incredible. I'm off to C.T. (Canadian Tire)



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    Registered JOE65's Avatar
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    By the way ... When drilling the holes for your shafts how do you ensure parallelism? Is it anything more than stacking the two plates and drilling both at once?



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    Cool

    Copy all you want. We are here to share experience.

    This is what I do to ensure parallelism:
    1. Stack 3 plates together and I used stapler gun to make sure it doesn't move (wood clamp would work but I don't have one:0)
    2. Drill the hole for roller bearings + motor shaft using _drill stand_.
    3. Remove 1 plate then drill the shaft holes.
    4. Mount the plates + shaft + bearings and start fixing the u-clamp.
    Whole thing (3-axis) takes less than 1 hour.



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    Lightbulb

    One more thing to share.

    The place I bought the plywood could not cut with precision so my plates are slightly off in size by 1-2 mm. To overcome this, the worktable is 'screw+nuts' adjusted on the four corners to the correct height before final fixing. Now, the table is 'flat' againts the router bit.



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    I must be missing something what typr of pipe clamps are those, what is there normal use, dont say clamping pipe LOL. I dont think Ive seen those before where do you buy them cant see real well in picture
    Thanks



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    Community Moderator ger21's Avatar
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    It looks like the cheap strap mounts for gas pipe or conduit.

    Gerry

    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)


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    Cool

    It's used to fix pipes to wall (I don't know its proper name) and I got it from hardware shop. May be photo below is clearer if not I'll send another photo of the unmounted parts.

    Attached Thumbnails Attached Thumbnails CheapCNC homemade copy-dscf0207a-jpg  


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    Cool

    Test 3d cut (4x4x0.5") on florist foam. Works great and accurate (to my expectation).

    Attached Thumbnails Attached Thumbnails CheapCNC homemade copy-dscf0206a-jpg  


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    Default Cool

    Great job buddy.



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    Where did you get the linear bearing for < 10$??? Part #?

    Bryan



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    I'm half way across the world in Asia. The bearings are from China but can't remember the brand/PartNo (the box is in a dump somewhere). They are not the branded kind (THK, NSF, etc). Sorry, can't help you there.... ;o

    Stupid questions make me smarter...
    See how smart I've become at www.9w2bsr.com ;-P


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    Default Linear Guides?

    Could you let us know what you used for the actual guides
    over the pipe? Great mounting idea!

    Thx,
    Jazz



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    Registered abasir's Avatar
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    Don't quite understand your question but for the guide, I used linear bearings as shown in the pictures. For the shaft, I used the shaft from scrapped dot matrix printers. I can't use the printer's linear bushing because its not strong enough.
    Hope this helps.

    Stupid questions make me smarter...
    See how smart I've become at www.9w2bsr.com ;-P


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