Here is a small knife I made,and I ran a test on it. I cut 201 pieces of (American) cardboard, some of them long cuts. When I got through, I could slice copy paper and it would also shave hair off my arm. This is a small knife 6 5/8" long,cutting part of blade around 2 1/2"...Nothing really pretty, but very proud of this little knife. Oh yea, the handles are Argentine Lignum Vitae (Ironwood) and also O1 steel...

Frank