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G05.3 Surface finish quality (SFQ)
Hurco WinMax (NC) G-code · Mill
Sets the speed against finish balance of Hurco motion control. P1 gives the smoothest surface but runs slowest. P100 runs fastest with a rougher finish.
Format
G05.3 P
Addresses
| Address | What it does |
|---|---|
P | Finish quality, 1 to 100. Low is smoother, high is faster |
How it works
Modal, group 19. Stays until a new G05.3.
Example program
T5 M06 (.500 END MILL ROUGH)
G05.3 P80 (FAST ROUGHING)
G90 G54 G00 X0. Y0. S6000 M03 (START)
G43 H05 Z1. M08 (LENGTH OFFSET)
…
G05.3 P80 (FAST ROUGHING)
G90 G54 G00 X0. Y0. S6000 M03 (START)
G43 H05 Z1. M08 (LENGTH OFFSET)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Needs the Select Surface Finish Quality option. Hurco blog gives defaults of 80 for roughing and 20 for finishing.
- Put a high P before roughing and a low P before finishing. Many CAM posts do not output it, so add it by hand.
- This is the NC way to use the UltiMotion style tradeoff. It is not a tolerance in inches.
Related codes
G05.3 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| LinuxCNC Tormach | NURBS block end |
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