Huzzle Cast Enigma - Difficulty Grand Master

Patented in America in 1975, the somewhat swirled pieces of this puzzle by Eldon Vaughn must be disjoined and then put back together.
I once found a smaller version of this puzzle about twenty years ago in America, but considered it impossible to solve at the time.
We have made a new version maintaining the difficulty of the original and licensed it for the Cast Puzzle series.
This is without a doubt among the most difficult of all puzzles.
The key word is “twist.”
Don’t use too much force... the pieces should just slide apart.
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