[KenFoulks]

Why does Haas always make things harder than they have to.

I believe that Haas makes things simpler and does not over complicate things.

On Okumas you can set the z zero for the sub anywhere in it's travel.

This is the same on a Haas.

You can then machine on the sub with it anywhere in it's travel, the machine takes into account where the sub is positioned and automatically adjusts.

So, if you want to adjust your part length, you can't? The machine decides what is best for you and does not just follow simple G code? This sounds like more problems.

The programs are the same for the main and sub on an okuma, you just specify g140 or g141 to tell the machine which spindle to work on.

Just specify G14 on the Haas.

The same handed tools even work on either spindle.

Same on every machine tool.

The sub spins the opposite direction as the main when an M3 is called and the tool is flipped over.

Same on every machine tool.