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Here's my thoughts...
Knowing that your goal is to deal with multiple vendors, definitely detail your driving dimensions (including bend radii) in the folded views. Flat views should typically be limited to overall reference dimensions and reference dimensions to brake lines. It is also good practice to provide reference notes for bend angle and direction on the flat view.
The reason for this practice is because your vendors may use slightly different bend radii and K-factors depending on their standard tooling and standard processes. By dimensioning the part in the formed state, you are indicating that the final formed part dimensions are whats critical. Afterall, it's the formed part that must pass form, fit and function. How they get there is up to the vendor.
Well spoken Gabe
I only wish more designers would heed this advice
my prints only include a flat pattern when needed for clarity.
Also, any flat pattern is annotated as "flat pattern for reference only".
for us, zero flat views. i don't want a flat part, i want a folded part.
therefore we only supply a drawing of a sheetmetal part in the folded state.
the sheetmetal vendors we use are professionals, they're very good at generating flats based on their tooling. the cam software they use is far superior to solidworks in regards to k-factors/corner relief's, etc.
I agree with Ken....
If we sent out all of our sheet metal to a vendor it would be finished views in the folded state only, dimensioned and toleranced appropriately for the form, fit, function of the part. Also a solid model would be sent to the vendor.
They can develop their own flat blank.
We bend metal in house, wish all of our customers would send us info like I describe above.