3d surface covers model instead of selected faces

[monkeydog]

Hello, Not sure if this is expected behaviour so checking...(I expected the path to include just the selected faces).

I've got fillet edge on my rectangle-shaped model, which results in 8 faces along the edge (top left, top, top right, left, right, bottom left, bottom and bottom right).

I'm using a 3d surface cut to mill this, in a single operation. This works ok until I add the final face which causes the entire model surface to be milled.

Tool path looks like it's going to be OK (bottom left face to be added)

Screenshot from 2021-03-23 21-39-39.png (100.08 KiB) Viewed 2111 times

Adding Model-Body.Face7

Screenshot from 2021-03-23 21-40-05.png (105.51 KiB) Viewed 2111 times

Entire model top gets a 3D surface now

Screenshot from 2021-03-23 21-42-11.png (105.94 KiB) Viewed 2111 times

Here is the model for reference. The fix I'm using is to leave a face out (Model-Body.Face7) which then gets added as its own operation (op rounded-edge-bottom-left-corner).


Milled model results

phone.jpg (93.24 KiB) Viewed 2107 times

Is this the right approach or has something gone AWOL?


(freecad-0.19-0.3.20201125gita50ae33557.fc33.2.x86_64)
OS: Fedora 33 (Workstation Edition) (GNOME/gnome)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.Unknown
Build type: Unknown
Python version: 3.9.0
Qt version: 5.15.1
Coin version: 4.0.0a
OCC version: 7.5.0
Locale: English/Australia (en_AU)

[Russ4262]

Welcome back to the forum.

Hello, Not sure if this is expected behaviour so checking...(I expected the path to include just the selected faces).
...

This is likely a bug. I will add it to my maintenance list for this op. 0.19 is the first official release that incorporates this complete overhaul of 3D Surface. Thank you for reporting this. We look forward to more useful feedback from users about this operation.

Nice project!

Russell

[cahlfors]

Exactly that happened to me too, but I was using a pocket operation.
There were four oval holes and as I selected the four wall segments in the last hole, the entire surface got included. And it wasn't just a matter of removing it again. I had to remove the operations, too.

[monkeydog]

Thanks Russ4262 -- It's OK for me to raise within the issue tracker with the above details?

[Russ4262]

Thanks Russ4262 -- It's OK for me to raise within the issue tracker with the above details?

Afternoon sir.
My apologies that it took me so long to respond. Yes, I think opening a Mantis ticket would be a good thing for bug.

Thanks you.
Russell

[monkeydog]

For references, this issue has described has been raised in the issue tracker https://tracker.freecadweb.org/view.php?id=4632

[Russ4262]

Thanks.

Russ