What is purpose of fullers on blades?

[Roland_M]

Originally Posted by thinreadline

This is a commonly held belief especially amongst those who have been in the armed forces. It is usually a fantasy promulgated by macho training sergeants to young recruits to scare or impress them ... even I was told this in the 1970s by several NCOs when I was in the Joint Services .

Thank you for your explanation. Maybe this is a kind of training sergeant running gag and they always have tears in their eyes from laughing, if the recruits believe that.

My father told this to me when I was six or so and I couldnt believe that. I have been thinking about this for a long time as a child, to find out whats wrong with this theory.