An easy fix to floppy neck post

Hi
This is cheap and old technic, but I upload it because I didn't find this method in 13doll.
http://www4.famille.ne.jp/~yah/dolltech/tech0otr.html#04

This is cheap and old technic, but I upload it because I didn't find this method in 13doll.
http://www4.famille.ne.jp/~yah/dolltech/tech0otr.html#04