Hi!

Have a problem on my job, milling a flange that are cut in half, so i milling a arc, and drill som holes. and then they put that pieces togheter and its going
to be a nice round hole there. but it aint,.. in one side the measure is 414 , (CORRECT MEASUREMENT) and in other axis it is 412.7 (WRONG)
but the measurement is good between all holes.

i have drawed a quick pic how i mean..

It milling with a 63mm milling tool with i think 12 plates.. the job is 35mm height, i put in some lines from prog.

we remove 4mm in radiell (ae)

G43 H2 Z-14 S.... M3
G0 X-175.5 Y50
G1 Y0 F...
G3 X175.5 R175.5
G1 Y10.
G0 Z10
X-175.5 Y50
Z-39
G1 Y0
G3 X-175.5 R175.5

We take out the Y0 at the "ears" and then move it down -3MM becuse we have 3mm from plasma cutting to remove too..
X0 is in the middle of the arc.

SORRY FOR BAD ENGLISH, I HOPE SOMEONE CAN GIVE ME SOME TIP!

Best regards.