The 11-minute video follows Callanan's steady hand as he patiently plucks and places thousands of itty bitty shreds using a tweezer over the course of an entire day, eventually reassembling them to resemble original polymer £5 banknote they once were. The banknotes were initially shredded by the Bank of the England due to a misprint and never even made it into circulation, but Callanan got his hands the annihilated remnants and actually worked with officials to produce the video.
As you'll notice, the final version isn't quite a magically restored piece of paper currency. It's more of a rough reconstruction, but it's still a hell of an impressive feat.
Suddenly the two days it took you to put together that 500-piece vista of the Manhattan skyline seems like an embarrassment.