Interesting technique, Nitro. I’ll give it a try on a friend of mine’s Juggernaught - he’s demanding glowing hot metal plates, and to teach him how to paint it I’ll have to learn myself first.
I would paint the main part white/off-white, and start blending orange through to red towards the edges. So white is the hottest part and then orange and red as parts which are not as hot (but still hot). Here is a picture of what I am refereing to.
ohh I really like tjubs second link. I think I would go in that direction. it makes we want to make paint my entire unit’s weapons like that for the banner of eternal flame effect.