I'm talking about the stria that most Coties leave behind. Its never a highly polished edge. I have four Coties, one seems like more of a cutter, two are about the same, the other very slow and fine. Some like lots of pressure/torque, some don't.
That's the fun.!! Learning each one you have, or mastering the one you have, and finding its potential or your own sanity. [emoji38]