Agree with 2 prviosu posts peopel shoudl say 15 degrees in the future.
Strange thign is my Dovo, GD and no name from Outback all allowed with round noses me to shave at higher angles. than the Bengal or Sansouci with square noses. I havent tried any of my round noses with a flatter angle to see if they will work better yet. Will ahve to experiment a bit.

Has anyone else noticed need for different angles for different razors? Is the square/round nose a factor or is it just coincidence?