Tim - call Grizzley Industrial at 1-800-523-4777 they show Phase
Converters and Rotary Converters. A phase converter costs about $169
running from 220 v. for a 1-4 HP motor. from John Burton, Mech Eng.
P.S. Take a look at my web site for a handy tool to groove metal
before bending. http://www.artsights.com/burtondesign
John, can your groove making tool accomodate curved as well as
straight lines? Shael