Making a ball of perfectly clear ice

A few months ago I made some ice that's perfectly clear, and now I want to turn it into a perfect ball.

Nile talks about lab safety (Chemistry is Dangerous): https://youtu.be/ftACSEJ6DZA

NileRed Beaker mugs: https://nilered.tv/store

#shorts ... https://www.youtube.com/watch?v=xrgcjGIp3HU