The first "pricey" folder purchase was an Emerson CQC 15. it came while I was at Home Depot getting some more concrete glue. I told my father in law that I was expecting UPS to drop off the knife and to watch for it. He was installing a sprinkler system within a river rocked bed. Anyhow, he got the knife, decided he needed a sharper knife to cut the piping so he opened up my box and was using that to press cut the piping on a red brick. Apparently he rocked the blade on the edge of the brick to cut that last little piece. After doing probably 15 or so cuts like this while I was gone, it was not a pretty sight when I got home. The edge was dented like crazy -everywhere, completely scratched the coating to the metal over the entire blade. Blunted the tip from sticking it into the ground hitting the rocks below etc. I hadn't even seen it yet. I was livid!! But held my tounge -most of it. There was nothing I could do about it as they dont warranty that type of use/situation which is understandable.
To make it worse I didnt know how to sharpen well then, so after trying to fix it myself, I pretty much destroyed it on my grinder -yes a grinder of all things. Lesson learned.
I have the handle though and thought about making a new blade for it now that I have the right equipment, steel and practice.