CNC Lathe threading

About a week ago I mentioned that I had bought a small CNC lathe at a
sealed bid auction. The lathe is a Dyna 3000. Mechanically it was nearly
perfect except for a few missing parts which I was able to replace. I
replaced the existing burn out spindle motor speed controller with a
KBCC-125 because it has tachometer feedback, good speed regulation and
if you remove the speed control pot will take a 9V analog signal.
Yesterday I use the dynalan conversational machine code to turn and
machine a 1/2" 20tpi thread. I was a bit worried that the existing
proprietary controllers wouldn't like an aftermarket and different speed
controller. It machined the threads beautifully. I tried a 1/2" 20 TPI
nut and it felt like a good number 3 fit and smooth. I could not find
any flaws under a 10X magnifier.
What is really nice about the DYNA 3000 is the 6 position vertical tool
turret mounted on the cross slide. I set up the machine so that tool #1
was a carbide r/h turning tool and tool #6 was a carbide threading tool.
It is really slick to watch it turn then thread the bar stock. The tool
turret is really simple and I plan to manufacture some in the distant
future if the patents have expired.
What I would like to hear from others that have machined threads on a
cnc lathe is whether or not their controller automatically adjusts the
path of the tool bit for the 29.5 degrees setting of the compound that
you would have on a manual machine. I talked with a guy that I know that
owns his machine shop. He says that he doesn't compensate in his AH-HA
software to take the compound setting into account. That since the ah-ha
software simply tracks encoder position he can take several passes with
feeding the cross slide only and get perfect threads. He did explain
that you could write the G code to compensate for the lack of using a
compound by offsetting the start position of each successive pass of the
threading tool by calculating it. The reason for the question is that
some time in the future I want to eliminate the dyna controller and
replace it with one of the low cost programs. I know that turbocnc does
threading and DeskWINNC is working on encoder feedback for lathe
threading. So I was wondering if the lack of threading at a 29.5 D angle
was a problem but now that I have seen the dyna cuts thread I do think
there is a problem.
Dan