The first problem to get the wax scatter right is to get the scale right.

The prop comes in at far too large. Thus, the attenuation of light as it scatters looks wrong.

I rescaled your prop to 12% and then the scatter numbers started to make sense.

You must remember that subsurface scatter is based on real-world measurements. If you present a candle 10 inches thick, made of wax, it will not look like a candle 1 inch thick.

The flame is really large and has a complex and odd shape. It's shaped more like a fire than a single flame. I could not get it to look right so I gave up and just left it.

But I thought you'd be interested in seeing the wax and wood shaders I made for this prop.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)