60.2mm anycubic kossel effector and rails
thingiverse
These are the 3d models i used to upgrade the stock kossel to have a wider parallel linkage (stiffer and more accurate), the distance of the nozzle to the outer ball joints is also reduced.  *DISCLAIMER: YOU WILL NEED TO RETUNE THE PRINTER* this will not run off the stockarm length and rail radius given normally.
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