I've done what I think is a very nice "4-axis" CNC conversion on my Taiwanese BP clone - X, Y, knee and quill. It's good for 350IPM in X/Y, 50 IPM on the knee, and 250 IPM on the quill, all DC servo-driven, all ballscrews (except the knee, which retains the stock leadscrew, and is used primarily for tool length compensation). Having been out of work for the last 18 months, I'm looking for money-making opportunities to help pay the mortgage. One of the things I'm considering is making pretty much bolt-on conversion kits, starting with the quill drive, which seems to be the most difficult for most people.

Is there a market for a *good* quill drive for, perhaps $1200?
Is there a market for a *good* 3-axis kit for perhaps $3000?

Each kit would include all necessary hardware (brackets, bearings, zero-backlash ballscrews, servo motor, pulleys, belts, all required bolts, nuts, etc.), and be, to the extent possible, completely bolt-on, with very few, if any, modifications to the machine.

Regards,
Ray L.