Many of you know the Oneblade razor was solely designed for the Feather FHS-10 Hi-Stainless Single Edge blade The Gem SE blade will also fit the Oneblade but it doesn't lock into place. Whilst some users who prefer the Gem have mentioned this not a problem others have reported blade shift during the shave. Recently, I've been following a few tutorials on how to modify the gem blade to fit the Oneblade so it locks firmly into place with an audible click. Having purchased copious amounts of both blades from Counnaught's I'd thought why not give it a whirl to see just how easy it was. My results are at the bottom of the page. Some may wonder why would you bother? Well given the huge price differential between the gems and the feathers, cost consideration comes into play here. Some Oneblade users have reported the feather is only good for two shaves max whilst the gem keeps it's edge for much longer. Some users also report the ultra sharp edge of the feather causes irritation whilst the gem doesn't. Tools : Any pliers or pincers for removing the spine from the gem blade A hand nibbler: Inexpensive but must be the type which cuts tiny bites from the metal rather than the shear metal cutting type. Step 1: Removing the spine: View: https://www.youtube.com/watch?v=T4exDJXACHg Step 2: Nibbling the edge - Len's tutorial for using the hand nibbler http://shavenook.com/showthread.php?tid=40618 Here's my results: The modified gem blade now locks into the Oneblade with an audible click. I found it took only a matter of a few seconds using the right tools.