[shacutz]

can anybody please tell me how to sharpen blades on my own. the don't make andis blades like they use to and the andis trimmer blades all come with a slight deformity in the top blade. sometimes a slight round bow so its not flat and it isn't exactly parallel to the moving blade stopping it from cutting how it's suppose to which is very sharp. can anybody understand me. did anybody else besides me notice the deformities. can anybody tell me what tool i can use to sharpen the blades. thank you.