^^^Tungsten would NOT be good for use on a yo-yo. One thing about Tungsten that a lot of people get confused about is strength verses hardness. Tungsten is hard, but not strong. It is so hard that it’s only able to be scratched by a diamond or another piece of tungsten. Strength is tungsten’s weak side…if it gets dropped or hit, it can chip or shatter into pieces…Imagine your yo-yo being made from tungsten when you have one of those unexpected ground smacks!