I think I might have a whack at making R/W heads using small ferrite cores/beads, the kind used in radio work. My plan is to string several cores up on a straight brass rod with a snug fit to their I.D., then bed the whole lot in wax and remove the rod. Next I'll use an abrasive <mumble 1> to grind a tiny V-notch outer diameter. After removing the cores from the wax I'll wind <mumble 2> turns of <mumble 3> gauge magnet wire on them, fixed in place with super glue. Then I would re-bed them in more wax, this time with the coils down and the internal notches up. The cores would be almost completely embedded in the wax to provide strength for the fInal step, grinding a flat very slowly from the outside until the sharp end of the notch is exposed for each core. This makes the gap. I'll remove them from the wax and mount them on <mumble 4> blocks with <mumble 5> screw adjustments. As for the drum part, I think I'll be best off with a disk instead, perhaps a 14" washing machine platter and spindle from a 3000RPM <mumble 6> Gonkulator. So, aside from the mumbles, does this sound like a workable plan? -Bobby