Instead of throwing out the junk blades from Harbor Freight, how about sending them to those of us that love them?! I for one, think they do a great job. I had one that didn't last as long as another, but I find if you cut a lot of polarfleece, it wears out blades faster than than melting butter. I try to keep one rotary cutter just for my good fabric and one cutter for cutting fleece. As someone else said, make sure you don't have 2 stuck together. They are lubricated and this sticks them together, you have to carefully slide them apart.