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  1. 23-05-2017 #7
    Desertboy's Avatar
    Lives in Leicester, United Kingdom.
    Desertboy
    Last Activity: 14-06-2025 Has been a member for 8-9 years. Has a total post count of 1,005. Received thanks 85 times, giving thanks to others 756 times.
    Quote Originally Posted by Zeeflyboy View Post
    Fair enough, just curious.

    I don't think a 100x50 will be sufficient for really good results in alu at 1.5m span, I would personally definitely consider what options you have for beefing it up.

    Just out of interest, for science n'all, try clamping each end of the profile and with a dial gauge measure the deflection in the middle when you press against it. I'm betting you can get a fairly significant deflection with moderate force.
    I was thinking something like this
    http://www.steelexpress.co.uk/struct...el/angles.html

    100*65 7mm

    fitted like this
    Click image for larger version.  Name: frame.png  Views: 1897  Size: 59.1 KB  ID: 21748

    Would add 14.2kg's + nuts & bolts to the gantry weight.
    Last edited by Desertboy; 23-05-2017 at 11:52 AM.
    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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