I didn't have the best luck with the HF blades I bought, but since I have more than one cutter, I use HF in one and use that for cutting batting, fusible fleece, etc-everything except good fabric-I even cut the plastic board I put in the bottom of my purses/totes. Using them for these purposes works fine and saves my good blades for fabric. I have gotten so much help and good suggestions from this board, and even if one doesn't work for me, I would never blame the board or its members for it.