Is it possible to make a cut of a body with a compound

[mwlandolsi]

Hello every body,
I am trying to make a cut of a body with a compound of a cylinder and a cube. but I got a bud result.
The shap became black. If I change the position of the cylinder or the cube (z< or> 0) the colour is a gain grey (default colour). but the intersection of the cube and cylinder, together, with the body remains in place. there is no cutting !


19.2
OS: KDE Flatpak runtime (X-Cinnamon/cinnamon)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.14555 (Git shallow)
Build type: Release
Branch: (HEAD detached at 0.19.2)
Hash: 7b5e18a0759de778b74d3a5c17eba9cb815035ac
Python version: 3.8.8
Qt version: 5.15.3
Coin version: 4.0.0
OCC version: 7.3.0
Locale: English/United States (en_US)

Screenshot from 2021-07-27 14-39-50.png (168.87 KiB) Viewed 662 times

Screenshot from 2021-07-27 14-40-13.png (169.31 KiB) Viewed 662 times

and in freecad 0.20


with freecad 0.OS: Linux Mint 20.1 (X-Cinnamon/cinnamon)
Word size of FreeCAD: 64-bit
Version: 0.20.25220 (Git) AppImage
Build type: Release
Branch: master
Hash: 46282db7c8c65d1205a4cd03499d4beadb1573c6
Python version: 3.9.6
Qt version: 5.12.9
Coin version: 4.0.0
OCC version: 7.5.2
Locale: English/United States (en_US)

Screenshot from 2021-07-27 14-41-22.png (121.81 KiB) Viewed 662 times

[Bance]

Part_Compound

[TheMarkster]

You might need to make a union of the compound if the objects within the compound intersect one another because self-intersections will usually cause subsequent boolean operations to fail. Alternatively, make a union instead of a compound in the first place.

[mwlandolsi]

Thanks for your support. I did not Know that creating a compound is not for intersection shapes.
Ok
but I did not find this in Preferences

Screenshot 2021-07-27 at 17-43-08 Part Compound - FreeCAD Documentation.png (32.36 KiB) Viewed 582 times

Screenshot from 2021-07-27 17-47-15.png (76.69 KiB) Viewed 582 times

[Bance]

Try 'RunBopCheck'.......

Actually the wiki is a little out of date here since 'RunBopCheck' can be enabled from the Part checkgeometry menu item, it's a check box in the dialogue.

Snip macro screenshot-a9e9c2.png (44.91 KiB) Viewed 573 times

[chrisb]

but I did not find this in Preferences

Where did you find this in the wiki? The documentation of Check geometry is correct.