Got Dremel fever several years ago. Early ones didn't have the removable collar which allows for easy attachment of router type plates etc. Foetunately mine's one of the first with the removable collar. I've used it for fine work like slotting screws for easier removal, sanding and grinding in tight places and carving wood spoons. It also makes a good drill for hard to reach places, or when my hand tires of the heavier power drill and the work won't fit in the press.

Like Vicegrip pliers, I wish I held the patent...Mooh.