[Routeron]

The gcode is intended to finish the path on the X-axis (Y0) on the right, but the path does not end where it should.
Can anyone see where the problem is?

(1)
(C8 CN trim) ;0.125 ;Max Tool Dia 0.125
(Set origin to socket axis, just outside edge of Al frame.)
(Move tool to X0 Y5)
G90 ;Absolute co-ordinates
F100 ;Set cutting speed
G0 X-3.86 Y1 ;Go quickly to 1 mm from job
G1 X-3.86 Y0 ;Go more slowly to the start of cut
G2 X-1.93 Y-0.8 I0 J-2.73 ;Cut a CW arc 2.73mm radius
G3 X1.93 Y-0.8 I1.93 J2.73 ;Cut an ACW arc 2.73mm radius
G2 X3.86 Y0 I1.93 J-2.73 ;Cut a CW arc 2.73mm radius
G0 X0 Y5 ;Go quickly to 5 mm from job
M30 ;End routine

[steryd]

The code finishes on Y=0. If the machine doesn't go there it probably has some backlash. Code has nothing to do with it.

[Routeron]

Thank you for the reassurance. I checked the path on this website, but there must be a bug in the plot.

https://ncviewer.com/

[CitizenOfDreams]

Thank you for the reassurance. I checked the path on this website, but there must be a bug in the plot.

When I import your G-code in CamBam, it shows perfect arcs ending at Y=0. So the code is fine, must be an error in the simulation.

[Formantjim]

I too ran your code and it works as written.

[Routeron]

When I import your G-code in CamBam, it shows perfect arcs ending at Y=0. So the code is fine, must be an error in the simulation.

Thank you, I appreciate the check.

[Routeron]

Thank you, Formantjim.
It's a strange one, as I've found ncviewer useful in the past, but now I'll need to double-check elsewhere.

[gwood]

The free version of NC Plot Ver 1.2 plots this correctly as well.