How to make a sword effect

Here is a picture example:

or like this:

or the effect is like some kind of sparkling particles .
I tried to search in the forum, but I don't know what the the technical term for this common sword effect is, so some one please give me an answer or can show me where I can get the answer. Thank you

I am waiting, maybe it's a good idea to check it tomorrow:)

hmmm, in the second pic (the first cant be displayed) i would say you need atleaste the BEAM function wich is only available in Commercial and Pro Version.
What Version do you got?

did you look at the Acknex Unlimited site? there is a great code there that does that exact thing. you might have to covert to A7, but it works great, i have used it.

I'm pretty sure that you can make this using models...

Thanks man, I should look up it first and I got what I want now. However, when I open sword.mdl, it gives me an window said In invalid argument was encountered, but when I run it, everything is OK. I don't know why. And since it's A6.4 version, so do you have any suggestions to make this follow the new version?

Thanks, I am using the free version since I am a novice, and I will upgrade it later... However, I found the beam function on the manual, that's what I want too.

BEAM not work with the free version. Only com and pro...

The one from AU resources doesn't work in A7, could someone tell me how to fix it?