Although it did not come so much, I was able to dress the hand saw which the file did not sharpen diamond sharpness.
I can not cut like old saw dumplings, but I could shave them little by little if the angles match.
I think that it can not be used for a long time, but it was better than a diamond.
I will try to blunt it a bit if I do not wear it.
When attaching a handle, I was broke to two in the mind whether I made it too hard. So I purchased another one. This person gave a handle gently. I broke when I broke with Aon Alpha, for the time being.