This is my first thread in this forum 
All I know about folder knives/and steel/ is from here .I never have own folder knife before.Leatherman Weave is my companion for many....many years. Now...I m working on my personal folder knife . For blade I will use HSS steel .HSS is good steel but it is not good for everything . So I come to this idea....why not make multiple blade ? When I go fishing I would not like to depend on 67 hrc HSS blade so carbon blade would be my choice .When I carry folder around town , HSS would be perfect .... What do you think about this ? Maybe it was done but I never seen/read something like that? To change blade would take half minute.........?
All I know about folder knives/and steel/ is from here .I never have own folder knife before.Leatherman Weave is my companion for many....many years. Now...I m working on my personal folder knife . For blade I will use HSS steel .HSS is good steel but it is not good for everything . So I come to this idea....why not make multiple blade ? When I go fishing I would not like to depend on 67 hrc HSS blade so carbon blade would be my choice .When I carry folder around town , HSS would be perfect .... What do you think about this ? Maybe it was done but I never seen/read something like that? To change blade would take half minute.........?