very sweet maxim.. I was unaware that you made sayas!
I decided from now to Make sayas only in soft woods. As i noticed that even so i use only chisels to make the hole it still somehow can scratch your knife Or make some marks
It is also much easier to make friction fit with softer wood. So i will only make them in softer woods now Poplar, Ho wood, Kauri etc
It is not like i have to much time to making them so my prices will be bit high. But i have many that just neeeed Saya no madder what hehehe
So thats why i will offer them sometimes
If you're using ancient kauri, that can have very hard minerals in it, so be careful as it could cause scratching. It is known to dull tools quickly.
Devil is in the details