Hi everybody, I'm writing with the hope somebody would have encountered the same problem then me...
I'm using rhinocam with mach3.

My machine i correctly setup, motor tuning and acceleration is fine.
If I try to run a simple square in 2D with defined dimension it works perfectly.
Problem starts when I'm doing V-carving with a 45° V bit.

Even thought the G-code seems to be correct and the preview in the cam software is exact the cut is different.
I seems that I'm loosing steps at the end of my code ruining my piece of work

In the attached images you can better see what's my problem.
We can clearly see what's happening at the upper right corner that stays rounded. The V bit exit to early...

G-Code:

Lines comming from the exterieur square supposed to be cut by the v-mill

G00 G49 G40.1 G17 G80 G50 G90
G21
(V-Carving)
M6 T1
M03 S20000
G00 Z10.0000
X284.9980 Y15.0020
G01 Z-5.0000 F103.0
Y184.9980 F300.0
X289.9980 Y189.9980 Z0.0000
X284.9980 Y184.9980 Z-5.0000
X15.0020
X10.0020 Y189.9980 Z0.0000
X15.0020 Y184.9980 Z-5.0000
Y15.0020
X10.0020 Y10.0020 Z0.0000
X15.0020 Y15.0020 Z-5.0000
X284.9980
X289.9980 Y10.0020 Z0.0000
X284.9980 Y15.0020 Z-5.0000
G00 Z10.0000
M5 M9
M30

Lines at the same moment from the entire code
G00
X284.9980 Y15.0020
G01 Z-5.0000 F103.0
Y184.9980 F300.0
X289.9980 Y189.9980 Z0.0000
X284.9980 Y184.9980 Z-5.0000
X15.0020
X10.0020 Y189.9980 Z0.0000
X15.0020 Y184.9980 Z-5.0000
Y15.0020
X10.0020 Y10.0020 Z0.0000
X15.0020 Y15.0020 Z-5.0000
X284.9980
X289.9980 Y10.0020 Z0.0000
X284.9980 Y15.0020 Z-5.0000

Hopefully somebody had the same problem previously and could help me to figure out.

Best regards

Lucas