help procuring NEMA 23 stepper motor mount; first of many newbie questions

Hello:

I'm new here courtesy of Hans W's recommendation.

I want to interface a nema 23 stepper motor I have with a Kerk screw rail
(I haven't bought it yet).

I don't what kind of precision to expect a local machinist to be capable
of (what if the guy makes levers for dumpsters?). I'm not a machinist,
so I don't want to overspecify precision that may be unnecessary, or cost
me more fingers than I can afford.

Upon discovering this list, I suspected you folks know exactly what will suffice.

I also wonder if I could pay a freelancer to make 1 or 2
(money or barter), when I'm ready.

I have two needs:

I am building a transformer/coil winder. One motor will drive a
spindle (?) or mandrel (?) that coil bobbins are mounted on.
Due to necessary torque (need 15 pounds of wire tension worst case), I'm
considering using a high torque electric screwdriver (90-120 inch-pounds),
and on the 'dead' end of the driven shaft I want to mount a NEMA 23 stepper
I have which has an integral 200 slot disk and encoder. The stepper would simple 'freewheel', or possibly be used as an electronic brake.

The second need is where the linear screwrail (combination leadscrew and
linear slide in one mechanism) comes in. This one will be driven by
a stepper to precisely control the wire traverse direction and pitch.
I have both Sanyo Denki unipolar steppers and Vexta 2-phase steppers with encoders on the back. I have alot of the Sanyo Denki's and a few of
the Vexta's.

This application should not need much torque. A precision pulley mounts on
the screw rail for the under-tension wire to pass over and be moved back and forth across the bobbin.

It is for a hobby application, so if I can find a 'street' method of doing this, my wallet will be much happier.

Thanks for your help.

Murray
multi-volti@...
http://users.softhouse.com/uptown/multi-volti/