BUG - narrow pockets cut "depth first"

[Tod1d (Tod (with 1 'd'))]

When cutting a narrow pocket, i.e. those used to limit full engagement when contouring,
The toolpath cuts a full depth slot first, rather than cutting both passes at the same level.

To duplicate, make a shape. Offset 1.5 x cutter dia & program a pocket with depth of cut less than max depth. If you can’t duplicate it, I can provide parts.

I’m sure this has been reported, but didn’t seem to have it’s own topic. If it does, feel free to merge this post if that’s possible. Or point me to the topic & I’ll add to it.

an illustration… 1/4" tool cutting 3/8" pocket

Should be

[WillAdams (William Adams (Carbide 3D))]

This was supposed to be fixed in 747:

• (FIX) Case where a think pocket turned into two slotting operations.

If you have a file where it isn’t fixed, upload it here and we’ll add it to our test suite and see if it can be fixed in a future version.

[Tod1d (Tod (with 1 'd'))]

Nylon_Clips.c2d (1.7 MB) Tested in V773

[mhotchin (Michael Hotchin)]

Also reported here:

BUG: Pocket operations cutting as slots

Here is the C2D file that had the problem: Turtle Rock.c2d (596 KB) If you extract the GCode and load into NC Viewer (attached below), you can see starting at line 1745 that the machine is just finishing a contour. After that, it drops and continues cutting on the same contour, i.e. a slot. It finishes the first contour at 6930, then moves to the second contour that completes the pocket. Instead, it should move over to the other contour and cut that before dropping. Turtle Rock.nc (231.4 …

[CullenS (Cullen Simpson)]

In my experience it worked with a 10% buffer on the pocket but not when it was much more than that.