When I first got my expensive Katana I made the mistake of underestimating both it's power and just how surgically sharp it is. I put a water melon onto a chest that I used to keep my cat litter in and when I did the practice cut, the katana (which like all good Samurai, I named!) went through the melon AND THROUGH THE CHEST and there wasn't any resistance. I thought I had just cut the melon but when I lifted it off, the chest collapsed, spilling cat litter all over my patio! Oops!!! Think I'll stick to cutting PEOPLE!!! (that was a gag by the way before I get a visit from the Old Bill!)