How are typical horn ferrules attached?

[tostadas]

I'm thinking about maybe grinding down part of one of my d-shaped handles at the ferrule (like a Marko shape). But I want to be careful not to go all the way thru the horn ferrule to the wood. Is the hole in in the center of the horn ferrule usually the same diameter all the way through?

 

[cotedupy]

If I'm understanding you right then IME - yes they are.

Like this you mean...?

 

[cotedupy]

(That was the same diameter btw. Just a slightly wonky picture!)

 

[tostadas]

If I'm understanding you right then IME - yes they are.

Like this you mean...?

View attachment 127257

Thanks that's exactly what I wanted to know. Just wasn't quite sure how to put it into words