ive never tried machining before, but one of my main hobbies is woodworking.
building the housing wouldnt be the problem, just gathering the circuit materials. i currently own a pets tore that sucks the life out of me, with 14 hours+ per day 6 days a week, plus sundays at auctions, seminars, family gatherings, and finally home maintenance, my hands are full. (not to mention my consortium group)

im sure i have all of the materials in my shop now, but i havnt even been down there in almost 2 years.

you could always use a Lazy Susan plate for your rotor. you can buy them brand new for less than 7$ from Rockler or maybe even SEARS.. (not sure where you live). it consists of two metallic plates with roller bearings in between. they are also used for mounting pivoting stools, VERY sturdy, and prettty smooth travel. or if you have an old stool, you could take it off of that. (i always see neighbors throwing those out)

you can measure the degree of tilt with a simple method. run your machine, then measure the gap of the rotor to the closest flat surface. repeat this for your other side. draw it out on paper, connect the dots and use a compass to find your degree of error.

it looks to me if you put a second coil on the other side, it would balance everything out.

this sunday i will go down and blow the dust off everything, and see if i cant start on this.

-b