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  1. 03-06-2019 #9
    mattnedgus's Avatar
    Lives in Sheffield, United Kingdom.
    mattnedgus
    Last Activity: 29-08-2019 Has been a member for 9-10 years. Has a total post count of 28.
    Quote Originally Posted by pippin88 View Post
    Don't cut the tube. Add diagonal braces and end caps (welded, glued, or bolted).

    Don't worry about weight. My dual drive 381 Oz in steppers will throw around my 100kg gantry system at 20metres/min.

    Pippin88,

    How do you get 20m/min out of those motors direct-driving your screws? Is it something to do with the quality of screws you're using?

    I can only get 7m/min direct-driving 1530mm of 2010 which (I thought) agreed with the theoretical max speed of the calculations I did.

    On a 16mm pitch that same calculation says I could maybe get 12144mm/min on the same motors but that still seems way off what you're managing (and my gantry is light - made-from-plywood-light!).

    Matthew
    Last edited by mattnedgus; 03-06-2019 at 11:09 PM.
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