The Pastel Pencil Sharpener is designed to be used with more fragile pencils such as pastel or charcoal pencils.
Seems to sharpen without breaking pastel. Hilary Nettleton (Northwich, United Kingdom) on 15 May 2012
I have not used it extensively as yet but have found it versitile in that it also deals gently with crayon pencils and those drawing pencils with softer leads ie. 3B and up. Ken Cottam (Leigh, United Kingdom) on 15 Apr 2014
To be honest I haven't used it yet for a drawing but it worked when I tested it. Ernest Barton (London, United Kingdom) on 16 Apr 2012