[graeme]

  1. Does this work for safety razor blades (e.g. the double bladed type)?
  2. How do you do it?

[DigitalJack]

http://lifehacker.com/5356529/extend-your-razors-life-with-a...

microscope before and after pictures here: http://teamdonline.com/technology/extend-life-razor-blades/

[DannyBee]

TL;DR Stropping is rediscovered.