I bought some of these because a lot of folks here were just ranting about how great they were and at such a good price. Well, they were a good price, but I have tried four of them now and they were awful. I don't think my cutting board is the problem as it is fairly new.
Guess I'll throw out the rest of mine and stick to the better name brands. I like my dull Olfa blade better than the Harbor Freight ones.