I came across an old Gillette ad from the 1960s if memory serves me right, about a Gillette razor that apparently had “no blade” instead it had a mechanism that you could turn the dial like “an old video camera” and would give you a fresh blade (oxymoron, I know). So it was a ribbon blade you could wind around. I’m a bit astonished and wanted to know if anyone has ever used one or has one.