I buy the rotary blades and one in 10 blades might be bad-but otherwise have had absolutely no other problems. I also bought the mechanics magnetic bowl (I think is the name of it) for pins and paper clips. Works wonders, for the paper clips I stick it to the side of my filing cabinet and put paper clips in them. Works great for my pins and sometimes the stray needle will end up in there (umm Thanks DH! LOL).