Hi

thanks for the reply....

I realised right after the post I should have left more details....

I'll have to post more info after this post as I'm not at home to look it up.

So...

from memory..... 1.5kw water-cooled spindle, with VFD (Chinese I guess, seen lots of them for sale)
mach3 interface board.... separate driver boards for each axis (2 on Y axis). I think 660 is part of the board number..... vague I know .... sorry.

Mach3 on PC laptop , not sure of version, pc has win 10 32bit installed

PC has 4 port hub into which the cnc in plugged and the MPG wireless dongle and most times a USB stick with the codes on...
if I plug the cnc directly into the pc it will lose connection immediately and reconnect.... and so on.... when in the hub it keeps connection ok... ???

my main issue is mach3 hanging part way through a job.... not in the same place though.

I'll update with any specific info anyone asks for.....

cheers