Tapered Threads?

Hi,

I'm new to lathe programming, I have a Bridgeport with a Microkinetics
conversation and just converted my lathe.


I need to turn some tapered threads for making studs for a steam locomotive
boiler. 12 tpi, 1 in 12 taper... various diameters... all boiler threads
are 12 tpi.

I understand the G33 command to set the threads, but not how to make a
taper... is that set in G33 or by a previous command?

Anyone able to help with a few lines of G-Code?

Linc Reed-Nickerson