Splendid!!!! im surprised how fast its cutting
0.06mm
thats a lot better than i would have thought :)
i had to try your scientific test, im getting about 0.03mm but i only have 120mm cutting space so your gantry sides were a good choice over plate
Yes one X motor is much stiffer than the other. It's limiting my feedrate...
i removed the drive from one side (in order to find the one that was stalling/binding) and it ran better on a single stepper than it did on both which i found pretty bizzar
i could only think that there was some kind of sympathetic (machanical) interference between the two with there being more drag on one side and because i was lazy when i fitted the the standard brearings (the fit is to tight) i cant back the pre-load off... the diffrence in drag between each side isnt massive but im hoping that its that causing the problems

my double row A/C bearings have turned up so ill give them a try at some point but for now ill stick with 1500mm/min