I'm trying to model a spark using Andrew Price's tutorial (Blenderguru), but the sparks always look wrong. You can always see the outline of the ico sphere. I'm wondering if there's a way to soften the outside of the ico sphere (using volumetrics) to the point where it's invisible?
I know that one way to color depending on distance from the center of an object is to add a texture coordinate node, and then connect the object output to a spherical gradient texture node. This is what I have so far:
I know the solution is probably so simple but I've practically been pulling my hair out over this, and haven't been able to find anything about it online.