I tried this over the weekend and the tape did protect the blade, despite getting soaked pretty good. My only slight concern was that I had a bit of trouble making sure the blade was aligned just right in the KJ-45, it was hard to get even light on both sides of the blade between the jig clamp. I may try some paper as you mention but once it gets wet I suspect it won't do much... possibly some plastic wrap would be better in this way or wax paper.