hi  I have   question my machine has backlash on Y axis 0.012mm on X axis 0.014mm  I cut a hole under Bearing 30mm everything is ok 29.95mm to 29.97mm dimensions

the part has to have dimension outside of 40mm x 40mm  but has 40.38mm on Y axis  and  on X axis 40.60mm  what's the problem?

I tried to set the machinery in different ways on 1/2 sherline , I tried to set the setup steps per unit but more worse comes out

Do you have backlash enabled? If s disable and try again and see if that makes a difference, it could be its set wrong.
Hood

I do not have enabled backlash. I try to switch on and see what will be I'll give you a message

i  have gecko driver g540  motors is 200


200 x driver 10 macro steps is 2000 % pinch 5mm  give me 400 steps

cut out with enabled backlash and it is the same  on X AXIS  is  40.65mm on Y axis  40.51mm

setup

setup

ok if i go 400 steps  on the distance 3'' or 76.2mm  machine can not overcome this distance, missing distance is 0.18 mm  I have to change the step to 401 then it is slightly more than 76.2mm . but if I  increases  the distance to 152.4 is 6'' is again a problem, step 401 is not enough I have to give 402 step and again the machine goes a little more

Try setting a value of 5 or more for the pulse and dir on Motor tuning page. You may even need to use Sherline mode if that doesnt help.
Hood

the problem was in the Velocity and Accel. I fixed it but it is still a small problem