when I was doing the work , I had a knife I ordered from Touchtone Taxidermy Supply Co. the blade was 2 1/2" curved. mad from a kinda tin metal. sharpened real easy,(only 2 or 3 strokes and it would shave) and staied sharp real well. the blade was flexiable and would run around the horn burrs real easy.it worked the nose and ears good also.
the small flexable blades are the best (for me anyway)