Achille,
I use 3D documents regularly to produce all my fabrication drawings for beams & columns including end, base & finn plates, notched ends, shims, bolt centres etc...see attached...without too much trouble. In fact, I don't think there's anything, so far (touchwood!), that I haven't been able to do.
I couldn't quite work out from your images what you're trying to do. If it's anything like the drawing attached & you could give me a bit more detail, I'll do my best to help out...
AC16-24 Solo (latest version)
OSX 10.15.6 - MacBook Pro 16" 2.4 GHz 8-Core Intel Core i9 - 64Gb DDR4 - AMD Radeon Pro 5500M 8 GB