Reply To: Shavers- Women certainly can't understand this

One interesting source on koshershaver.com which I did not look into is that we know a Nazir must shave his head with a razor blade. He shows that if one used any other instrument, and even was able to get the hair just as short, he would still not fulfill the requirement. So one sees that a razor blade in halacha is the only device which is considered true giluach.