aka wet-stones
Wet Stones are my preferred way to keep my kitchen knives sharp. The only other method I find attractive is the rolling tumbler that have recently hit the market. Still I think wet stone is more adaptable and reenforces the mindfullness surrounding my knife hobby.
When I bought my first Japanese knife I also grabbed this cheap amazon wetstone “DDF IohEF” . After a half a year of using it I’ve noticed the surface has become quite uneven. Working on solving that now see Whetstone Flattening. Besides that I’m keeping my eye out for a better wet stone. This page contains my research on that.
This article breaks down some nice Japanese Whetstone brands.
Beginner: KING 1000 / 6000
king stone
Intermediate: Shapton Pro / Kuromaku 1000
shapton stone
pic from amazon
44 EUR on amazon