Here are a couple of 'extreme' close-up shots of the molten steel effect on the plaque.
It turned out much as I has anticipated so I'm pleased.
The heat effect was done with a base coat of white primer.
I then used a creamy white with a dab of yellow to spray most of the plaque leaving just a few traces of the white.
Over the pale yellow I used a darker yellow with a hint of orange and then 'hot' orange with a slight touch of red. Finally a purple/red/touch-of-brown combo was used for the darkest areas followed by a dry-brushing and misting of a charcoal grey for the slag.
Final photos will come tomorrow in the Model Museum and on my Members Collections thread once all the paint has cured.