Hi there, yes I have converted my HM32 mill to cnc, it was easy, I replaced the x and y axis screw with a 16mm ball screws and still use the same set up for the z axis, I used 570 0z stepper motors purchased from Homman Designs in Melb and M542 stepper drivers and break out board from Ocean Controls also in Melb, every thing is running smooth, better than I expected.
Regards
Nick