@mhaberler: "it is a problem of interaction of a given machine with given limits and a controller which exceeds those limits" I think I would get join fol. error also if I disconnect steppers from machine
@zhivko the steplen and stepspace will give determine the maximum you can set the maxvel and maxaccel pins. So check that maxvel/maxaccel stays under the maximum you can get due to steplen and stepspace
So I did some calculation as @luminize suggested - here is result - I see from it that maximal speeds are pretty big - so if I understand @mhaberler correctly - if I put this speeds as max speeds - that should allow for constant speed over surface?
velocity limiting is a feature of the tp, and it has to do with limiting acceleration_ and _deceleration to keep with machine accel/decel limits therefore fiddling speeds will not have any impact on the decel you see in sharp corners
repeat: accel/decel, not speed
do you understand the concept of limiting accel/decel by the tp?