I bought my Bridgeport and it came with a static convertor. Never bothered to upgrade to a more expensive/better rotary phase converter.
Be careful with it, when you get it wired up. They can and will hurt you and themselves in a hurry. A nice implement to have on a tractor forum, but some guidance will go a long way in making life better.
If you get it wired up, send me a PM and I will donate a couple endmills to you to get you started. You might have to pay flatrate shipping on them, depending on what kind of mood I am in when I go to the post office.
Just a footnote, but my Avatar is the reduction gears from a Fray All Angle Milling Machine. They were a weakspot due to being able to tear them up if you didn't follow the directions, which nobody had acess to, lately...
I came across a good set and they are on loan to another friend who is trying to duplicate them.
David from jax