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sheet metal dimensions not looking right


i have made a part and converted it into a sheetmetal part.

but when i make it a flat work peice and try to dimension it. The values seem wrong

View attachment 138

i mean shouldnt the 529.76 be equal to 490.37 ?

this is the model

View attachment 139

the following is a pro-e file of the part.

**update the file is 114k so i can not upaload it. leave me your email and i will send you the file. thanks

the reason i want a sheet metal version is so someone can make the shape for me


New member
Look closely at where the rip is, it may be to one side of the bend and the developed length is adding to it. Also look closely to what the dim is describing. Display the lines for the bend.