Damnit, I knew it. Used a Feather for a sixth shave this morning. Knew the fifth was it, but no... Had to do it. Too lazy to change the blade. Multiple touchup passes on the neck and FAILED the Alum Test.
Shoot me now.
Shoot me now.
OK, haven't used a Feather yet, so I have to ask: are they only good for five uses or something?
I suspect average is 2-3 shaves. The Feather may also fail faster. Here is a comparison made by Oscroft.