Hey, So a buddy of mine came to me the other day and asked me to sharpen his titanium diving knife. So of course, I jump on the opportunity Due the the fact that I've never seen titanium anything before. The knife its self was recently bought and it was apparent, It was alright sharpness, but there was no wear or tear, But of course the was a secondary bevel. So today I took my 1000 grit stone to turn it into a convex edge, Then I went on to refine that on the 6000 grit, Then stropped with compound, as per the usual with any other knife I sharpen. But I noticed it was having trouble with cutting paper, So I did some more work with the 6000 going slowly with medium to light pressure to get a clean edge, Then went to strop it, But to no avail. I have sharpened tons of knives and all to pristine edges, From chefs knives to Bush craft and all sorts of types of grinds, bevels and edges. But this knife won't get sharp no matter what I do, Can anyone give me some pointers on this?