6/6 difficulty for Hanayama Hourglass

Could this be the hardest puzzle Hanayama have ever made to date?  It’s 6/6 on their difficulty scale but we bet they wish they had a 10! to give it.
If the solution is anything to go by then the answer is yes. We’ve never seen them produce anything with 5 pages of diagrams and 43 steps to solve the puzzle before!
Designed by Jin-Hoo Ahn from Korea who also designed the Level 5 Hanayama cast Padlock and the G&G puzzle. Now this one is a step up from those already very hard puzzles to the hardest Level 6 difficulty rating that Hanayama have.

https://www.mrpuzzle.com.au/hanayama-hourglass.html

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Four pieces of precisely engineered metal to make the Hourglass puzzle

 

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