Guns, Dogs and Blades QnA

What do you guys think about these roller type knife sharpeners? Amazon.com I'm thinking for the wife who cant wield a honing steel.
My opinion it may be a perfect match for your bride. Jodi is very similar with her blade sharpening skills. Honestly it just got easier for me to do them. My issue is sometimes (often) Jodi is not cognizant of what is underneath or behind the material she is cutting and uses my good Shun cooking knives. Then promptly wrecks a perfectly sharp blade! I am a knife snob in the kitchen!