An Openel Moder’s favorite tool could certainly be the Dremel. I have had mine for years, it is a 5 speed corded model from the last century. If I need a new one, I’ll probably get the cordless. I have a fair amount of accessories for it. The little sanding drums are perfect for shaping the handles. One of my best investments was the Dremel Multi-Vise It can solidly hold the tool and allow you hold your knives with 2 hands.