Hi Mike, I can only advise you on my own experiences converting a BV20m to cnc. There are probably better/cheaper solutions, but I like servos with Gecko 320's from
www.geckodrive.com. Fot the mini lathe, speed is not a necessity, I went for a top speed of 1800mm/min so geared my servos down accordingly. Of course the gearing will depend on the pitch of leadscrew you go for, somethinkg like 5 TPI should be fine. The servos I used were 360 oz/in peak, but these were overkill, I reckon 200-300 oz/in peak will be fine when geared down slightly - even 150-200 on the x axis should be fine. Well theres a starter for you, hoep it helps
