I've just put together a dedicated threading station using a Ridgid Supreme Versatapper and an old Craftsman drill press. Though I got a great deal on the threading head it didn't come with wrenches for the chuck or a rotation stop bar so yesterday I made them. The wrenches were made from ¼" steel plate, slots milled, bandsaw cut and smoothed and descaled with an angle grinder. I wanted to try the Blue Wonder Gun Blackening kit that I bought a while back and I have to say that I'm impressed - if you spend some time dressing the metal surface I think you could restore a factory appearance to a firearm using it.
Here's a shot of my threading station and though it appears nothing to write home about, it works perfectly. All in I have $130 in this project and I'm tickled to now be able to quickly and nicely thread holes in things. I'll make a cover for it today. The threading head was designed for use in a drill press and it has a built in 7:1 speed reduction so that the tap speed is just right and it reverses the tap out with up force applied to the quill.