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  1. #1
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    Bens convert mdf CNC to plywood

    Hi, i bought a hobby build machine a few years ago and havent used it for a while, It is very sloppy and I tried to tighten it up a bit ,and that may have been a mistake as some MDF delaminated.
    The main reason i havent used it much is the noise aspect.

    At some stage i would like to build a shed or enclosure with some soundproofing....

    but anyways MDF machine has three motors , nema 23 or 24?, leadcrews, , aluminum angle with skate bearings for motion, electronics are gecko i think

    one of the problems is the guy who built it took a smaller design and scaled it up without beefing it up enough.
    also there is no way to adjust the contact between skate bearing and rails,

    I contemplated trying to build machine with t-slot or supported rails, but i think that a better design uses two Y-motors and i could work out how to alter electronics, or alternatively 3 motors could be good for moving bed design , but this would waste long Y- leadscrew that i have.

    as such id try to see if i can improve machine by improving structure slightly (thicker plywood, more skate wheels (wider bearing on rails), a way to tighten bearing again rails, and tenon box for bed.

    so at the moment i have built bed, and have sketchup design nearing completion
    machine is about 1200 x 600 - hoping to get 900 by 450 cutting area

  2. #2
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    Re: Bens convert mdf CNC to plywood

    Click image for larger version. 

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  3. #3
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    Re: Bens convert mdf CNC to plywood

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  4. #4
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    Re: Bens convert mdf CNC to plywood

    Attached Thumbnails Attached Thumbnails plywood for making cnc 20.jpg  

  5. #5
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    Re: Bens convert mdf CNC to plywood


    this is the MDF machine - note my attempt to stiffen up sides of gantry - originally only 10mm mdf sides

  6. #6
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    Re: Bens convert mdf CNC to plywood

    im cutting some pockets out with current machine, but will cut outline with jigsaw or table saw
    surprising it can cut at all given the sloppiness of structure MDF machine- gentle pressure moves router at least 5 mm

  7. #7
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    Re: Bens convert mdf CNC to plywood

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    this is the base of the plywood machine im building

  8. #8

    Re: Bens convert mdf CNC to plywood

    Looking good. Keep the photos coming!
    BrianV
    WoodWorkerB
    HobbyCNC.com, WoodWorkerB.com

  9. #9
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    Re: Bens convert mdf CNC to plywood

    thanks Brian , i will, some progress today - most pieces cutAttachment 330224

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    Re: Bens convert mdf CNC to plywood

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  11. #11
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    Re: Bens convert mdf CNC to plywood

    sanding and drilling next

  12. #12
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    Re: Bens convert mdf CNC to plywood

    Its handy the you can cut the new parts on the old. May I suggest investigating the cost of support rails linear bearings as these are getting cheaper, of course everything is relative to your budget. Good luck with your build
    I'll get it finished sometime after I start it.....

  13. #13
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    Re: Bens convert mdf CNC to plywood

    thanks robe,

  14. #14
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    Re: Bens convert mdf CNC to plywood


  15. #15
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    Re: Bens convert mdf CNC to plywood

    have dismantled old machine and starting to get metal bits for rails, welding skills sorely lacking........Attachment 330804

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    Re: Bens convert mdf CNC to plywood

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  17. #17
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    Re: Bens convert mdf CNC to plywood


  18. #18
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    Re: Bens convert mdf CNC to plywood

    who ho - got machine working, small manual test cut, all good so far

  19. #19
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    Re: Bens convert mdf CNC to plywood

    enclosure plansClick image for larger version. 

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  20. #20
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    Re: Bens convert mdf CNC to plywood

    frame with staggered studs to weave insulation betweenClick image for larger version. 

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