Tried doing a convert to sheet metal and it only recognizes one end and can't convert the whole part. Is there another way of flattening this piece?
This post can be helpful: SOLIDWORKS Modeling Challenge - Measuring Imported Fillets
It appears that the one surface may be warped, if that is true then using the "flatten surface" tool may be helpful. Unfortunately the flatten surface is only availble with the premium package of SW. If you can post your file someone may be able to help you out with it.
Retrieving data ...