I don't cut much with my rotary blade, but when I do go to use it, it is always slightly dull. But then when I go to the fabric store, I always get distracted by a million other things and forget (maybe my brain is slightly dull too...?) to buy more blades!
I might try the rotary blade sharpener out. Has anyone else tried it, or maybe something similiar? The needle sharpening pad is wonderful, so now I'm curious whether the rotary blade sharpener is just as fabulous.