Bump forming an auger

[dbunyip]

Looking to bump form an auger flute in 180 deg sections. I have scanned the original auger for reference, it is rolled so I understand it wont be perfect match. I have attached the file that I have been working on and what I have got so far. I can get a single bend to work but cant get past that.

[Warmingup1953]

Why not use an Online calculator? Then if you want you can check model the Bump formed version in Fusion. Typically you cut the flat sheet/plate reasonably close to a full annulus such that you can add on a grip rectangle still. You'll need an number of these to make a full pitch.

EDIT: Failed attempt shown!