We had a batch of pullets done once when we bought them and I didn't see that it harmed them at all. I have actually been thinking about this lately and wondering if there is a way to do it yourself. I have one in a cage by herself right now healing because her "roomates" pecked her back end clear through the flesh. It was nasty looking and they wouldn't let up.
You can use dog nail trimmers to cut them.
Chicks Galore,your birds beak was probably cut with a dewinging machine.It will not grow back when using them because it is cotterized,this burns the nerve so it will not grow back.By using dog nail trimmers it will grow back and you will have to cut it again and again.As long as you do not cut the nerve.