I held onto a double edge razor blade sharpener that was my fathers for sentimental reasons. Anyone who have used or is using one: Is it worth it? Does it work better with some blades rather then others? Or its just a nice trinket to keep and start a shaving memorabilia collection with? Just getting into wet shaving Just curious as I said I found it about 10 years ago when we cleaned out my parents home and it was in his dresser drawer.