I'm sure that you will not get the machine to run on single phase as it is at present. It would mean sacrificing some some elements (reduced spindle power, smaller or no vac pump etc.), but I suspect that the cost and other problems of installing 3phase or using a large generator is likely to rule out keeping the machine as 3phase. I am fairly sure that from what has been said a small unit with 3ph already installed will also be a non-starter, and anyway I know that you , your friends and neighbours will not relish the idea of moving that beast again. These machines are likely to have have a power requirement of at 10-12KVA and I think you will find that is "pushing" your luck if you try to run it on single phase in its current configuration. G.