Here's a question, possibly related to old blades.
I use an electric rotary shaver, I've never used any straight blade. Now and then, I get little nicks, usually on my neck, which almost bleed a tiny bit. These are not from the whiskers getting snagged and being forcably pulled out, that's a very different feel and they do not bleed. I think it happens more when the whiskers are short. I can see how a straight blade can possibly nick the skin, but I don't see how the rotary, with such tiny gaps in the screen, can possibly grab any skin. Anybody have any guesses how this happens.