Blade after sharpening, before demagnetization, and before being blown off with compressed air. Note all the burrs.
Blade after being blown off, but without being demagnetized first. Note the burrs that are still attached to the blade.
Blade after being blown off and demagnetized.
If you're interested in more about this (or more about sharpening in general) here is a link to On The Edge. Take a look at the preview issue or email me if you have any questions.