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  1. #1
    We'll guys, after a couple weeks deliberating about an imported machine, I have decided to take it upon myself to just build bug myself.

    router will be mainly constructed from the following

    steel box section for the base
    160x80 extrusion for the gantry
    cnc router parts rack and pinion drives on the X
    planetary gearbox on the Y
    16mm ballscrew and 15mm Hiwin on the Z (thanks lateatnight)
    20mm hiwin on the X & Y

    Renderings and pics to follow.

  2. #2
    OK so... We start off with a nice and heavy base.

    Base is constructed of 100 x 100 Cold rolled box section for the main legs and 100 x 60 on the base table.

    80 x 80 Extrusion will run alone each side of the table with smll slots in the box section to allow for slight adjustment. then locked off with angle brackets



    Im still not sure if i should lose the leg in the centre to allow me to run a brace under the table to help a little more to aid the crabbing of the gantry. this will also open up the possibility of using rotating ball nuts in the future.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  3. #3
    Over complicated derek with not enough support for the bed. The spacing of the cross beams is too far apart and I would make them full width and support from under side.

    Less is more.? Go bigger on the steel structure but have less of it. Check this out to get an idea what I mean.

    Last edited by JAZZCNC; 22-11-2014 at 11:51 AM.

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  5. #4
    Now. you have really threw a spanner in the works! after seeing that i just want to buy one outright! haha

    In terms of not enough support, shall i just run the crossmembers striaght through as you say? i had planned on putting an Ali extrusion bed over the top of this also...

  6. #5
    Is this what you had in mind?

    Ive turned the bed supports vertically to give a little more support and transfered the long one to the bottom to support

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #6
    Very keen to see how this goes as I'm thinking a 8'x4' machine could be my next build and have probably enough steal kicking around to build one. What are you designing it to cut?

    Are you not tempted by ball screws for the long axis as well?

    I'm thinking that by the time you do all the rack and pinnion stuf ball screws would probably not be much more?

  8. #7
    Quote Originally Posted by D-man View Post
    Is this what you had in mind?

    Ive turned the bed supports vertically to give a little more support and transfered the long one to the bottom to support
    Yes and No. Yes to one piece supports but the spinal beam needs supporting from below not just fastening under the bed supports as that's doing nothing really.!

  9. #8
    hi d-man i wish to make a bigger machine, do you work from plans are do you have some idea in your head that you work with...thanks viper wallsend

  10. #9
    Quote Originally Posted by viper View Post
    hi d-man i wish to make a bigger machine, do you work from plans are do you have some idea in your head that you work with...thanks viper wallsend
    Derek (D-man) gave up with the build in the end I think and bought a chinese machine, well actually think was from radecal but they are just Chinese imports with there stickers on.!!

  11. #10
    thanks for your quick reply

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