Hello Mike,

That's it, it works perfectly !
Thank you for your time and advice, have a good day.

Hello everyone ! My problem : I want to create a part based on an otherone, and then apply some modification on it. Once done, I could add drills (for exmaple) without any modification on my primary part. But if I modify the primary part, the "daugther" one will also be modified. The only ...