I haven't tried the blades from Harbor Freight as I use a 60mm wheel, which I love, it closes automatically. I would say to buy blades when you have a coupon from Joann's or what ever store you buy from, try harbor freight blades - but do not invest in a blade sharpener. Most of us have tried them, and there is hardly 1 or 2 quilters who like them. I have forgotten that I used to use scissors (1980's) to use fabric - never again. It would be like living without my microwave.