Post processor outputting wrong dimensions (Haas)

[jsilverio86]

So my post processor for my Haas lathe is giving me wrong diameters at the post or software level. I made a simple test and my model is 2" to a 1" step and fusion simulation and PP are spitting out 1.9861 and .9861

Is there a setting that I am unaware I am using?

Here is my code for the finishing pass. I've also included my model with simple tool paths and a pic of simulation where I assume it in radius mode but still off.

(Profile Finishing1)
G99
G18
G0 Z0.1961
X3.0361 Y0.
G50 S4000
G96
S1200 M3
Z-0.0088
X1.1461
G1 X0.9861 F0.008
Z-1.0008
X1.9701
G3 X1.9861 Z-1.0088 I0. K-0.008
G1 Z-2.0088
X2.1461
G0 X3.0361
Z0.1961
G97
S1510 M3

M9
G53 Y0.
G53 X0.
G53 Z0.
M5
M155
G53 G0 Y0.

M30

[seth.madore · Accepted solution]

That is because you have your Compensation point (in the Tool Library) set to "Tip", when it should be set to "Tip Tangent"

Results when changing it to that method:

N16 T404
N17 G99
N18 M22
N19 G97 S1503 M3
N20 G54
N21 M8
N22 G0 X3.05 Z0.1969
N23 G50 S5000
N24 G96 S1200 M3
N25 G0 Z-0.008
N26 X1.16
N27 G1 X1. F0.008
N28 Z-1.
N29 X1.984
N30 G18 G3 X2. Z-1.008 K-0.008
N31 G1 Z-2.008
N32 X2.16
N33 G0 X3.05
N34 Z0.1969
N35 G97 S1503 M3

[jsilverio86]

Thank you for the response. I guess I do not understand the relationship between tip or tip tangent and how it affects offset. I though tip was the most outer part of the tool.

[seth.madore]

The best visual representation you can get (in Fusion) is to set it to "No Holder", see attached photos