knife in the block takes on a whole new concept here.
https://interestingengineering.com/vide ... -the-worldMakes you wonder about TSA examinations.
The Vid is over 11 minutes and is rather tedious from repitition but it has English subtitles for the Japanese captions. You can bounce ahead and follow the fabrication and sharpening and honeing to the knife working about 9 minutes into the vid. Think about rasps files and scrapers as well as bandsaw and belt and disk sanders. Nonetheless, He did it because he could.