You won't get an outward glow unless you add another part to your blade.  A flat plane, such as the Poser One Sided Square will do the job just fine.

Then you can create a transparency map for it, which extends beyond the edges of the blade.  Make this glow in the same way as the blade and you should get a simple and effective glowing outer edge.

Another way you could do it is with a spotlight parented to the blade and using Atmosphere.  The downside of that approach is you'll probably die of old age before you get the settings on the light to your liking, or failing that, before the render finishes.

 

Coppula eam se non posit acceptera jocularum.

My Store

My Gallery