I'm a beginner ...and I'm tryin to do it by myself....I bended the first wall,unbended it...and when I want to create a simple flatten form of this sheet metal part...it asks me to select references...and when I select the references...it shows me that I didnt take enough references....can anybody help me to understand it better??
Elvis, I downloaded the part and I don't believe you have any Forms present in the model to flatten. All you have is a bend that you have created and then Unbent it.
In attempting to open the file: " 'PROVA1' cannot be retreieved. "
Try reuploading and we can try to assist from there.