Andymac must be tired. "Search the threads" is usually my line. WB works on the on coated to print ink jet. Non-coated works best with UV, but you prolly could use enamel or vinyl inks. I did a limited edition DVD for Matthew Barney, we set up a jig that was triangular and the same thickness of the dvd. We also used a sharpe tick mark on the dvd that coresponded to a tick mark on the jig. UV colors look different on CDs than DVDs so you can't spot match on one then switch to the other with shifting in colors.