Most of you who have a Spyderco 204 Sharpmaker know what I'm talking about. The stones regardless of the grit selection all have one side that has the groove running down the center of the stone. That groove is mainly made for sharpening fish hooks, ice picks, darts and other items with precise "points" on them. There are two things I would like to ask you all about. What do you all use your grooved side of those 204 Sharpmaker stones for other than sharpening the items I mentioned? Also I've been using my grooved side of my 204 Sharpmaker stones for sharpening or tuning up plain edged blades that have slight wear on them. I've had some most interesting results using the grooved side of the stones for PE blades. I was wondering what results you all might have had using them? Also I've had to replace a couple of sets of medium stones on both my 204 Sharpmaker units. I used the worn out medium stones mainly as a de-burring tool. What all do you use your discarded medium 204 Sharpmaker stones for?