I've searched a lot all over the forum and didn't find anything useful for my case.

I need to design a sheetmetal part like the attached .jpg. It's a part of an assembly where there are some other components, attached to it and with assembly cuts for screws, axis or rivets.

I need a real 3D (rolled sheetmetal part with forming tool and extruded cuts) and also need the flattpattern for manufacturing.

I thinked about three ways to design it:

1. Type 1
   • Base flange
   • Extruded cut
   • Unfold
   • Forming tool
   • Extruded cut (removes excess material)
   • Flex tool
2. Type 2
   • Swept flange
   • Extruded cut
3. Type 3
   • Revolution
   • Shell
   • Extruded cut for opening cilinder
   • Extruded cut

Type 1: I get my 3D with some problems of accuracy because of the flex tool. The problem is that I can't get the flat pattern without suppresing flex operation before.

Type 2: The simplest way, but the problem is that excruded cuts dissapears on the flat pattern.

Type 3: I can't convert solid to sheetmetal part because of the forming tools.

I'll appreciate some help, please.

Regards