thanks jazzcnc for the reply and the diagram , i will get the components purchased and get the upgrade started , this last few days i have spent going through the vfd manual which has been a daunting experiance to say the least,, trying to get my head around all the parameters and what they mean, looking through youtube for videos on the vfd setup , when you have no experiance it seems like an impossible task. what size of compressor would you recomend ? ,i have an old 300 litre but it has seen better days and dosent sound so good , a mate has a milling machine and has offered his services with a mounting plate for the spindle. hopefully over the holidays i will make a start.

thanks .