OK, I know this topic has been talked to death, but I wanted to share what I found out about the problem I was having with the blades. I ran out and bought a bunch of the blades (like so many quilters and sewers did) and couldn't get them to cut after the first try. I put them away and carried on. Finally, I started to use my rotary cutter with another blade and it wouldn't cut very well. To make a long story short, after checking some stuff out, I found out my cutting mat was shot. So, I bought a new one and low and behold, the Harbor Freight blades work great! So, if you are having trouble, check your mat, it might be the problem.

Glad that they are working for you!

Mine are ok

thanks for letting us know

I had this problem had no idea that is what it was. The groves make it not work good.

I did not think of this! Thanks:)

thanks for the tip

Love my Harbor Freight blades!

Thanks. I had tried some and took them back because they cut so unevenly. Maybe I'll give them another try.

Yep I found that out too when I switched mats.