I everybody, that my first post and my english is not to good, so i'll do my best.

I have to do a special part and i don't know how to program it.
I have to do a threading operation but the thing is that the thread begin straight and then 2° of taper.

First part 1.0 long major diam .785
second part .875 long final diameter is .843

The lead of the thread is 14

I wish that somebody can help me with this

Thank you