Looks like F360 outputs wrong cutting feedrate?

1

I created a 2D contour to cut at 28 in/min and noticed that my Shapeoko 3 was cutting at 10 in/min.

The same project includes a pocket cut, also set to 28 in/min and it actually cuts at the correct speed.

I know almost nothing about g-code but it looks like the job starts at 25 in/min and then switches to 10 in/min.

Am I setting something wrong in F360?

Here’s a piece of the G-code:

G1 Z0.1125 F25
G19 G3 Y0.9075 Z0.1 J0.0125 K0
G1 Y0.92
G17 G3 X3.9257 Y0.9325 I-0.0125 J0
G1 X0.85 Z-0.0074
G2 X0.7316 Y0.9816 Z-0.012 I0 J0.1675
X0.6825 Y1.1 I0.1184 J0.1184 F10
G1 Y11.025
G2 X0.85 Y11.1925 I0.1675 J0
G1 X4.8687
G2 X5.0362 Y11.025 I0 J-0.1675
G1 Y1.1
G2 X4.8687 Y0.9325 I-0.1675 J0
G1 X0.85
G2 X0.7316 Y0.9816 I0 J0.1675
X0.6825 Y1.1 Z-0.0143 I0.1184 J0.1184 F25
G1 Y1.663 Z-0.024
Y11.025 F10
G2 X0.85 Y11.1925 I0.1675 J0
G1 X4.8687
G2 X5.0362 Y11.025 I0 J-0.1675
G1 Y1.1
G2 X4.8687 Y0.9325 I-0.1675 J0
G1 X0.85
G2 X0.6825 Y1.1 I0 J0.1675
G1 Y1.663
Y2.3576 Z-0.036 F25
Y11.025 F10
G2 X0.85 Y11.1925 I0.1675 J0

2

Are you using any ramping entries? Did you set the ramp feedrate, or use the default? F360 has a feedrate for plunge, ramp, entry, exit, during “staydown”, and cut - it’s easy to miss one.

3

I have all of the feedrates in the tool tab set to 28 in/min. I didn’t see a staydown federate. Maybe I’m missing something.

4

I just created a new contour operation and now it works properly. I saved the old one and will dig into it later.
Thanks for the quick reply mikep.
Ray

5

There are 5 on that page, a “no engagement feedrate” on the “linking” page (sometimes, depends on the path) There are a couple others tucked in there if I remember.

6

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