I guess most of us tend to have some sort of interest in other sharp things , swords etc.  I have just been looking at an impressive web site called myArmoury.com . I went there initially to look at information about the hardness of steel in old swords . I thought maybe some folks here might like to have a look .  Maybe if it is of interest then Jan or Steve may wish to put this post in a different area ?

http://www.myarmoury.com/about.html.