I'm trying to get some bent sheet metal parts made by SendCutSend, but can't get their site to accept my 3D STEP file. With the attached 3D model I get an error "This STEP/STP file contains a non-sheet metal part and cannot be manufactured."

I used a material thickness of 0.119" and a bend radius of R.063" taken from their bend calculator output for A36 steel.

https://sendcutsend.com/bending-calculator/

I've never designed bent sheet metal parts. What else do I need to do in MoI to create an acceptable 3D model?

- Peer