I really can't see the point of tinkering with Opinel knives. Basic, affordable and in my opinion a pleasure to use. I took my son out to shave some silver birch (felled) in Tilgate last year, he was taking his Duke of Edinburgh Award at the time. He was methodical and sensible when it came to opening, locking and using it. Closing the blade was a little different, he was concerned that he'd cut his hand and passed it back to me. I was impressed, much better to do that than be overly confident.