I have been working with blender for over a year now, and most problems I run into I have been able to google out the answer. This latest, however has stumped me. Figured I would see if anyone with a fresh set of eyes has an obvious solution. I call it the ‘Threaded Tampon’ for lack of a better description.
What we have here is a simple bullet / tampon shape that can be easily created using a basic spin. Then the shape has to have threads ‘cut out’ at an angle. My idea was to spin the basic shape, then screw the thread outline and somehow do a boolean difference operation to remove the intersecting areas. I have tried twice to no avail, and figured I would throw this problem out to you before attempting a third try.