Nothing is indestructible. Heck, if you let something just sit around long enough, it will desintegrate into subatomic particles. Granted, "long" in this case is longer than the age of the universe. That may sound absurd, but I consider the HI warranty roughly equivalent. Yes, you can think of a way to break an HI khuk. BUT you either have to be trying hard, or be really, really stupid. HI products perform knife-like tasks - specifically cutting various non-crystalline materials - very well. That's more than just not breaking. If I beat a piece of wood with a baseball bat, it probably won't break, but it probably won't get the job done either. The materials, production methods, and design all come together to give you a product that will perform it's intended function very well, for a very long time.
Point two - compared to "knife companies" and even American makers, kamis have very little control over their steel supply. They have very little knowledge of the steel type or composition - even using leaf springs from one particular make of vehicle, I imagine there's considerable differences in composition when compared to a sheet of some "branded" steel like S30V, A2, etc. etc. Also, the previous use of the steel could have created invisible flaws or inhomogeneous regions that won't really show up until use. Finally, there's a huge difference in reproducibility between a computer-controlled heat treating oven and a guy with a kettle of water. It's amazing that they have the experience to overcome these issues and make blades that are so durable. (granted, the thick blades do offer a larger maragin of safety for heavy uses, but that solution presents other challenges).
To cut to the chase - in the last few years, there have been a handful of khuk fatalities (to the blades, not their uses), and an assortment of mishaps. I respect the HI warranty, but take it with a grain of salt. Most khuks will outlive me and remain useful for my children, grandchildren, and beyond. But occasionally a bad apple sneaks in. HI has the integrity to replace the stutters with a blade that will work as promised. So test your blades thoroughly and enjoy using them hard.
rant off
