In a drawing, you can specify which components and ribs should be excluded from the section view or local section view of an assembly through the Section View dialog box. The Slice tab also appears in the Drawing View Properties dialog box for a slice or local slice view.
To access the Cross-section Extent dialog box after the cross-sectional view is created:
Right-click the section view and select Properties.
I had indeed tried the extended function but I can't select the part body. While I was getting there with the hide/show tab. I specify that it is not an assembly in the .sldasm sense but a .sldprt part
I watched all 3 videos and didn't see what I was looking for. Maybe it doesn't happen. I know it's possible with CatiaV5
Here's a view. I would like the tube to stay cut but not the mouthpiece.
After some research, I didn't find the option you are looking for either, on a drawing of a multi-body part, you can't select the sizes to cut (and therefore those you don't want to cut).
The best solution I can see is to remove the hatching and redo it manually on the parts you want to cut and then redraw by hand, the missing lines on the cylindrical part you don't want to cut.
sorry for not taking the time to answer you as we go.
In any case, thank you very much for looking into the problem!
Unfortunately the various tips proposed are not quite suitable, because I need to keep the part as built and I have to avoid "hacks" even on the plans (risk of errors during modifications etc.).
I ended up having a HotLine that confirms that it's not possible....