The BladeForums.com 2024 Traditional Knife is ready to order! See this thread for details:
https://www.bladeforums.com/threads/bladeforums-2024-traditional-knife.2003187/
Price is $300 $250 ea (shipped within CONUS). If you live outside the US, I will contact you after your order for extra shipping charges.
Order here: https://www.bladeforums.com/help/2024-traditional/ - Order as many as you like, we have plenty.
Patina scares me for food prep.
I never been to a Japanese sushi restaurant and see them use a carbon knife that looks that bad. That knife no matter how much you paid or how good it cuts does not look sanitary to be in a kitchen being used for food prep.
In the world of kitchen knives the most commonly used is Japanese Camellia oil as it is also suitable to come in contanct with food - one small bottle will last you a lifetime. I would definitely avoid WD40 as it has also come cleaning agents (or so I recall) that might even react with the blade and will not be too healthy for the handle either. Otherwise a pure mineral oil (food grade that is suitable also for wooden cutting boards) should work too as it does not chemically deteriorates over time
I never been to a Japanese sushi restaurant and see them use a carbon knife that looks that bad. That knife no matter how much you paid or how good it cuts does not look sanitary to be in a kitchen being used for food prep.
Some of y'all might want to consider staying away from restaurants all together if the sight of a clean carbon steel blade with a patina causes you concern.