I will like to add something about Jnats
Many think that sword stones or sword polishing is same as knife polishing, but in fact that is very very different things !
They have to use very different stones as steel is much softer then on our knives ! Stones they need to have very little cutting power and be very different shape.
Many sword smith is NOT sword polishers so dont think that is you are sword smith you have to be good at sharpening things or polish it !