How to draw this part with inventor?!

Hey there ,
I want to know the accurate way to draw this part in biscuit making machine shown as an attached file

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4 Answers

use equation curve with the cylindrical coordinate to create a helical curve with variable pitch

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Another technique is Project Curve to Surface/Wrap to surface

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The only way I know is to do a 3D scan of the object as these parts are old Guss parts.
I have however tried to reproduce the part so that the functionality is the same I dont have any measurements so that its guess work.
Hope this helps

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