I bought myself an inexpensive yanagiba for a practice polish. It was pretty crooked so I straightened it up & have started working on the ura (back hollow).
I started at 800 grit but now I'm using the 280 grit stone in the picture. The diagonal grind lines are slow to go. My hat's off to the guys that do this all the time.
Started at the 2 ends & meeting towards the rear atm. Not sure if I'll go coarser or stick with the 280 for now. Will be glad when I finish the 'hard' side . :)