No problem at all. They seem to last longer than the regular rotary blades. Also, after 2+ months my blade was getting a little dull, I had been doing a lot of cutting, including a lot of stiffy--put the blade in the sharpener and it was better than before. Love HF blades and love the price... Also, my DH and I can shop together at HF and I have found some really great stuff there.
Barbara