Quote Originally Posted by m_c View Post
Are you using a charge pump?
If not, it sounds like the parallel port doing random things as things boot up.
If you've not got a charge pump, a quick fix would be an extra switch to keep the lathe powered of until the PC has booted. It's not ideal, but it would work, provided you remember to turn things on in the correct order.
Actually, id go CS Labs for the simplicity however not value for money at present. I could look at something like one of the smoothieboards or something that is better than the BOB but less expensive than CS Labs.