BootstrapCNC Router Plans


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  1. #1
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    Default BootstrapCNC Router Plans

    Hi all,

    I have been working on releasing a set of plans for a 2x2 Moving table or Flying Gantry design for a while now and I am finally to the point where I can release them.

    bootstrapcnc.com

    Please take a look if your interested, any suggestions or feedback is welcome.

    Thanks,
    grumpygeek

    Similar Threads:
    Last edited by grumpygeek; 02-07-2016 at 07:42 PM.


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    Default Re: BootstrapCNC Router Plans

    Just an FYI.

    Updated the plans to increase Z axis travel from 4 to 6 inches to allow for some flexibility in router placement and bit lengths.

    bootstrapcnc.com




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    Default Re: BootstrapCNC Router Plans

    The adjustable linear rail is ingenious Grumpy!!



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    Default Re: BootstrapCNC Router Plans

    Thanks, I think it works well. I thought it would be easier to get the small assembly of the bearings accurate rather then the longer rails. Not the first to do this, just the first to do it with skate bearings I think. Using the bolts for spacing came after I found using wedges (shims) to set the spacing was a pain and had to make several attempts to get the rail tension right, it is much easier now.



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    Default Re: BootstrapCNC Router Plans

    I can see something similar working with the Rockcliff Model D...like so...

    BootstrapCNC Router Plans-rockcliffmodeldmod-png

    Quote Originally Posted by grumpygeek View Post
    Thanks, I think it works well. I thought it would be easier to get the small assembly of the bearings accurate rather then the longer rails. Not the first to do this, just the first to do it with skate bearings I think. Using the bolts for spacing came after I found using wedges (shims) to set the spacing was a pain and had to make several attempts to get the rail tension right, it is much easier now.




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    Default Re: BootstrapCNC Router Plans

    I was thinking something more like this, it's closer to the original rail design, except you could adjust the top rail. Would need to build one to make sure it works as expected.

    BootstrapCNC Router Plans-2016-02-20-11_55_57-viacad-pro-rockcliffrail BootstrapCNC Router Plans-2016-02-20-11_56_23-viacad-pro-rockcliffrail BootstrapCNC Router Plans-2016-02-20-11_56_41-viacad-pro-rockcliffrail

    You could add additional spacers if you want more room for the lead nut, and remove the washers from the bearings if the assembly rubs (it shouldn't). You could forgo the bolts on bottom and just glue and screw. You might still need to shim the bearings to get things right. Oh and I used steel angle for the rails of my last build, was cheaper and it may wear better than the aluminum.



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    Default Re: BootstrapCNC Router Plans

    That I like! I like the simplicity of the Model D design, but have worried about the bearing and rail being a sloppy fit, or becoming loose over time. I don't see why your design wouldn't work. If I remember correctly, the bearings are somewhat inside the plane of the rail and groove on the Model D. Yours is slightly outside, but that's not a problem. I agree with you on the steel angle. I think it's a much better wear surface than the aluminum.

    Quote Originally Posted by grumpygeek View Post
    I was thinking something more like this, it's closer to the original rail design, except you could adjust the top rail. Would need to build one to make sure it works as expected.

    BootstrapCNC Router Plans-2016-02-20-11_55_57-viacad-pro-rockcliffrail BootstrapCNC Router Plans-2016-02-20-11_56_23-viacad-pro-rockcliffrail BootstrapCNC Router Plans-2016-02-20-11_56_41-viacad-pro-rockcliffrail

    You could add additional spacers if you want more room for the lead nut, and remove the washers from the bearings if the assembly rubs (it shouldn't). You could forgo the bolts on bottom and just glue and screw. You might still need to shim the bearings to get things right. Oh and I used steel angle for the rails of my last build, was cheaper and it may wear better than the aluminum.




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    Default Re: BootstrapCNC Router Plans

    Grumpy...if you don't mind me asking...how thick was the MDF that you used on your Rockcliff D build?



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    Default Re: BootstrapCNC Router Plans

    It was mainly 3/4", I think I used 1/2" for spacers between the bearing trucks (assemblies?) and the parts being carried.



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    Default Re: BootstrapCNC Router Plans

    k...thanks! After I posted the question I took a look at your site and got the info from there too. I'm still toying around with building the Model D...possibly with your rail system above.

    Quote Originally Posted by grumpygeek View Post
    It was mainly 3/4", I think I used 1/2" for spacers between the bearing trucks (assemblies?) and the parts being carried.




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    Default Re: BootstrapCNC Router Plans

    Grumpy,,,I have some steel v wheels with 3/8" ID. I wonder if something like this, similar to Rockcliff D, would work? The adustment groove is in green and allows downward adjustment of the V Wheels against the V rail. Now that I look at this, the adjustment should probably be at the top bearings.



    Attached Thumbnails Attached Thumbnails BootstrapCNC Router Plans-cncidea-jpg  


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    Default Re: BootstrapCNC Router Plans

    I shouldn't hijack your thread.... sorry about that!!



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