I have an old Swiss Army Knife on which I can only open one blade; the rest are locked in place. How should I clean this, and is there anything else I should do to refurbish it, like oiling, after I clean it?
This knife has been part of my daily carry for over a decade, and I carry it when I exercise, so I'm sure the innards are packed with some combination of pocket grunge, old candy and sweat.
The one blade I can still pull out works great, but the other blades are nice too.