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  1. #10
    Quote Originally Posted by Nr1madman View Post
    Once there is possibility for play there is no work getting done :)
    Have had some issues with cuts. Thought the spindle needed serious tramming but in the end I think I located the error. My 36mm plywood spoilboard is flexing!!
    Have only fastened it to the machine frame at 8 points. 4 screws at each side.
    Seems like I have to counterbore some screws in the middle aswell :)
    Did not think the routerbits would have that much "pull strenght" that it had!

    Back to the drawingboard......

    Skickat från min SM-G955F via Tapatalk
    I made my bed captive (It sits inside my frame) for this very reason but then the pressure is on you to cut the mdf perfectly otherwise it will still wobble, I think I got it right as I ended up having to tap all 4 corners with a wooden mallet to get it to sit flat. I'm also not using the bed for clamping.

    I have 18mm mdf then 6mm on top which is my spoil board. I made aluminium clamps from 2020 Tslot and they flex like hell totally useless like yourself I underestimated the forces involved and have had to remake all my clamps in steel and £35 wasted at KJN. Under the MDF I have 4545 Tslot supports, every 12cm I think it works out to.

    Wait till you start cutting at 8m/min and you'll see the forces involved lol, my floor concrete workshop floor rumbles when it's running, even lorries don't make the floor do that lol.
    Last edited by Desertboy; 18-04-2018 at 03:37 PM.
    http://www.mycncuk.com/threads/10880...60cm-work-area My first CNC build WIP 120cm*80cm

    If you didn't buy it from China the company you bought it from did ;)

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