One piece is enough. After you get one, file it first, and then make a weapon. It's right to make a double sword with severe weathering (it can be upgraded to a unique one in the future). If not, please read the file again until it is finished.

Ps: Just brush it. I wish I could brush it out. I'll tell you what RP is bad for. At that time, I made a bomb suit, and it took 20 shots to get out of the shell. I just went from being abused by dragons to being abused by me. Brush dragon day 0, and find someone to brush the menu in the league area. Only one was produced at 30+, and the others have been for several days. ......