I tried a Dremil and it was too noisy so it scared my roo. I have this motorized nail file I got so many years ago from Sears. It is much slower and less noisy than a Dremil but it does the job. It is hard without help in holding my roo down though. He is still scared of the vibration. It really helps his beak to file it though especially in the advent of chips and cracks.