He might have gotten them from his version of Harbor Freight.
After a couple of uses, went dull.
Wait a minute.
Are you saying that you've actually bought a tool/instrument from Harbor Freight that actually STARTED OUT sharp, then went dull?
How can this be?
Everything I've ever purchased from HF was dull as melted wax before I got out the door with it.
Pure, unadulterated and unapologetically Chinese-made CRAP...all of it.
I refuse to buy anything from that place, ever again.
But your point was well-made.
(See what I did there?)