I have read a few posts here abount using a mizzy wheel to sharpen agate type flints (tc especially). I have looked all over for a "mizzy wheel". I believe they are an attachmentfor a dremel tool but nobody here has even heard of them. where can i get one as I have a pile on flints that need a new edge. also I am about out of 2f black but I have a whole can of 3f. I am going to drop my charge from 90 to 75 grains with the smaller powder I hope this is a good idea. I'm sure somebody has tried this, what was your experience?