Most people, I think, without access to 3ph power, would rather
buy a 1ph motor than deal with the hassles of trying to
produce 3ph themselves. There are lots of sites devoted to showing
you how, but if I remember there are basically three methods:
a static phase converter (which you can make or buy), which is
effective but causes the motor to run at much less than full
power; a rotary converter (which you can also make, and involves
a second 3ph motor used as a generator to create a 3ph power
source), which is rather cumbersome; and digitally synthesized
3ph power, usu using a VFD (variable speed drive) running on 220v
1ph AC (which is expensive -- more expensive than buying a motor--,
and which is rumored to damage some motors because of its less-than-smooth
sine wave, but which adds the advantage of a variable speed controller
to a single-speed motor.) ... I've had a 1941 Unisaw with original 3ph
motor sitting around for about ten years while I make up my mind and find
the time to choose one of these options