Hi, not for the faint of heart but you might try the document listed in the first post of this link: https://groups.google.com/forum/#!to...ot/V6ATBdT43eU

I've been reading up on auto-leveling on the kossel and it is complicated quite a bit by the geometry of the printer itself. Most folks on the Kossel Pro forum have come to the conclusion that you are better off starting with a level and flat bed and let the autolevel routine compensate for issues with the geometry of the printer. The other issue discussed is that the arduino chip cannot make calculations with high enough precision to solve the equations.

Cheers,

KDog