Roughen edges of material opacity

[tpearce2]

I’m making a material that creates a ripple like hit effect on a wall.

I have used a Radial Gradient to multiply against a texture for the opacity which gives a soft circle. It’s a little too perfect. I’m trying to find a way to roughen up the edges to give it an organic look.

How can I create a rough edge for opacity so some of the electricity can leak out?

Here’s the radial gradient I’m using for the mask

[soTaddel]

Just use an additional texture as a mask. Some Noise texture, which gets added to the radial mask.
Maybe you can experiment with the Noise Node.
I know this post is old, but maybe it’s interesting for other people.