Thanks for your replies everyone, but I'm still no closer to solving this one...
Here are the G's generated by each version of Mastercam (and their respective Post's) By the way, I have tried opening v2's Post from within v8, but I just get an error and it won't open
Here's
v2's G's (these WORK with my Hurco):
______________________________________
%
G90
G40
G71
M25
T1M06
G00 X25. Y0. S2000 M03
G01 Z-1. F50
G03 X-25. Y0. I0. J0. F200
G03 X25. Y0. I0. J0.
G00 Z0.
M25
M09
M5
M2
_______________________________________
And these are the codes for the SAME '25mm radius by
1mm deep' job generated in
v8's Post:
_______________________________________
%
N10 G70 G75 G90
N12 G0 T1 M6
N14 G0 X25. Y0.
N16 S2000 M3
N18 Z10.
N20 G1 Z-1. F50.0
N22 G3 X-25. I0. J0. F200.0
N24 G3 X25. I0. J0.
N26 G0 Z10.
N28 M5
N30 G0 M25
N32 M2
E
_______________________________________
Any more thoughts guys? This one's driving me nuts!