The design and operation of Homopolar V are described. The device was designed so that there would be no driftvelocity (or voltage) limit as had been encountered in earlier experiments. Experiments with the device show that rotating plasmas need not suffer from a serious velocity limit, at least. at early times, and the discharge seems capable of producing a dense plasma with ion energies of thermonuclear interest, at least transiently. (L.T.W.)