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Maker Kossel

This is the official build thread for the Maker Kossel we're selling at the space.  We are in the process of making a Wiki that will be accessible through our website.  But this thread will be the home for all questions, concerns, modifications and hopefully photographs of completed printers and the stuff you printed with them.  This should hopefully keep all the info on the Maker Kossel in one place, and that'll help people new to the Kossel printer in building one for the first time.

Comments

  • Rob
    edited July 2015
    Im going to discuss some of the essential math involved in the Kossel here, 


    these values  are absolutely integral to setting up a kossel, they are how the machine dictates its size and pathing for effector movement
    #define DELTA_DIAGONAL_ROD 214.0 // mm
    #define DELTA_SMOOTH_ROD_OFFSET 146.2 // mm
    #define DELTA_EFFECTOR_OFFSET 20.0 // mm
    #define DELTA_CARRIAGE_OFFSET 19.9 // mm

    ALL of values MUST have a decimal behind them The arduino IDE needs a decimal place to force floating points in the mega, if you do not have the decimals, you will be victim to performance issues. 



    These numbers allow us to compute vertical and horizontal distance, Having these numbers wrong will result in a convex or concave travel pattern if the carriage, diagonal and effector values are correct and you end up with a convex travel (the effector ends up further away from the glass as it travels from dead center to any point) increasing smooth rod offset will reduce the issue, and opposite if concave travel (effector is getting closer or crashing into glass from center out to any point on the glass).

    green signifies the carbon rods with traxxas ends and the yellow square signifies the triangle that the value compute.
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