I have a sheet metal part that I converted from a surface I create that forms a semicircle (top view). Its 1/8" aluminum. To form it we will need a lot more bend lines so that we can form that half circle on the brake as a segented half circle.
How can I do this? I have attached the file
If you are trying to "Bump" a sheet into a circle rather than roll it, you will have to model each bend to get bend lines for that.
Have fun adding many 175 degree bumps (I hate that they are not 5 degree bumps)
The angle referance use for flanges is the wrong way in my opinion. A very small bend should be 5 degrees not 175 degrees when adding a flange.
As @hawcad shows, using lofted flange is easiest way to achieve this, the key "option" to use here is the "Triangulation" bending method, which allows the model to look smooth......alternatively, I have used a trimmed polygon sketch to get a real world faceted [using a lower bend count] contour flange [& lofted flange] in sheet metal parts.
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