I use my blue tape for everything. I write myself notes (like stickey notes) for important info like what size needle is in the machine and the date I changed it. And theres a strip of blue tape that tells me when I changed my rotary cutter blade. I put them right on the front of the machine. I also put a strip on the little ridge just before the metal piece that encloses the feed dogs. Know what I mean? Yeah, that stuff has tons of uses. Don't keep it in the garage for painting!