Quote Originally Posted by JAZZCNC View Post
Personaly for the price of cheap VFD I'd use what you have. If the BP motor is upto it and you have tapping head don't see the point.?
Edit: I might be tempted to remove the Variable drive setup and go direct drive but wouldn't bother with Servo unless need the Indexing etc it provides. Even then this is possible to lower degree by fitting an encoder to vfd provided it supports this option.

Davek,

see what the man says above. no point in going servo on a bridgeport.

Either way, do look at getting a power drawbar and some quickchange TTS type tooling