Making a block of perfectly clear ice

Regular ice is usually filled with bubbles, and I think it's really ugly. What I want is some beautiful ice that's perfectly clear, and I'm gonna try to make some.

Videos that I used as reference:
• How to Make Clear Ice Home | Pro | Expert:    • How to Make Clear Ice Home | Pro | Ex...  
• Advanced Techniques - How To Make Clear Ice:    • Advanced Techniques - How To Make Cle...  

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