Sometime I think companies go too far! If you have a blade to sharpen, sharpen it with a sharpener. I surely don't want metal 'filings' on my fabric, as someone else has told of. Why do we need tools that do 2 or 3 jobs in one. Why not make us tools for one purpose that are high in quality with the latest improvement and let it go at that. It's just as bad with the tools men buy "Three tools in One". Many times the whole thing isn't worth the money spent on it and is hardly ever of good quality. Well, I through grumbling :-)