Can surgically removal of the private part of the rapist help stop crime against women?

Recently in one of the rape cases, a Honorable magistrate of a Delhi court, opined and recommended to the govt. of India, to punish the rapists by surgically removing their private part. There is a saying "na rahega baans na bajegi basunsri". In some countries this punishment is awarded to the rapists. In other countries their crime is taken very seriously and they are punished with life imprisonment as they are considered criminal of the siciety. I also feel that to stop crime against women the punishment under the law should be very strict. Now we see that in many cases the rapists manage to escape the law and got free in the absence of proper witnesses. Such people repeat the crime.