[stevo1]

Keep us posted. I am curious to see what comes of this.

Stevo

[angelw]

You are rigth Stevo, I should not dismiss the suggestion, it just was taking too much of my time with due times long overdue, but as soon as possible I will try duivenhok's suggestion. Thanks to both.

jolulank

jolulank,
Irrespective of whether the G02/G03 are reversed on your machine, the example code should not have resulted in a 270 degree move. Whether G02 or G03 should be used can simply be determined by running the program in air and observing the direction, CCW, or CW, taken by the tool. If the required result was a convex radius, and the tool moved as shown in Fig2. of my earlier of Post, then G03 is correct.

We've seen your comments that you've tried everything to fix this issue, not that you've specifically used I and K instead of R format, as suggested by Ford. If you have used I and K, what was the result?

Regards,

Bill

%
G50 S250
G0 T0101
G97 S250 M3
G0 Z1.5
X2.0
G1 Z1.0 F.1
G3 X6.0 Z-1.0 I0.0 K-2.0
G0 X10.0 Z10.0
T0100 M5
M30
%

[CNCRim]

My suspect the reason you got a big circle before exit because there is not enough room for too compensate....... give a bigger number and try feed in both direction instead just Z.

[sinha_nsit]

Definition of CW and CCW in circular interpolation generally depends on whether it is front-type or rear-type lathe. One has to look at the arc from the positive side of the third axis, following right-hand coordinate system.

[jolulank]

In mastercam there are several options for the arcs. Delta start to center, delta center to start, others that I cannot remember and absolute. Using absolute I solved my problem.

Thanks for all who helped me solving this problem

jolulank