How remove a profile from another
 

Dear friends,
I am a new user in Design modeler, I am going to make a cylinder with a hollow with square cross section in the cylinder, please help me how can I make it ? in fact in the other CAD softwares like solidwork or catia you can do it using "remove" or " groove" how about design modeler ?

Sincerely

Well why not just extruding the sketch of your cylinder already with a hollow square? Even using CAD software like Catia, why doing it in 2 operations if you can do it in 1…

If you still want to do it in 2 operations (creating a cylinder, then “removing” material for the hollow cross section), just create your cylinder, then sketch your square and choose “remove” in the operation option.