I have had a lot of customers ask about making a square to round lofted sheet metal part that would actually flatten out. I have created a template part for this operation and tied that part to a spreadsheet to allow for quick configuration of the part to fit your need. The method I used was creating a 40 sided polygon for the circle and placing 1/4 of a 40 sided polygons in all four sides of the square instaed of fillets. Then I mapped all the transistion points.
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Nice one Justin !
Hours of geeky entertainment - thanks.