Piece modification

hello I would like to enlarge my piece a little bit but I do not know how to do easily. it is 110 MM outside and I would like it to be 120 MM ext . Inside is 90 MM and suddenly it will be 100 mm . Thank you for your answers. Jonathan

piece bdh modifiée.3dm (281.6 KB)

For revolved geometry like your object, it really helps to use the XYZ axis system. The axis of the object would be on the Z-axis. That way you can design your cross section and simply revolve around the C-Plane Z axis. For modifications it’s generally a good idea to keep cross sections.

piece bdh modifiée.3dm (338.9 KB)

Thanks martin