Attachment 257656

My question is what would be the easiest or fastest or best way to pull the correct geometry from this model to get a I.D. profile so I can write a tool path for my lathe?



I have bobcad/cam25 lathe and mill package.
I haven't been to a class.
Everything i know (very little) has been from trial n error.
I have learned a lot from reading post in the past then running out to the garage and trying them,lol