OK this was just a experiment to if I could do this smoke effect paintwork as it is a brilliant effect.
The engine is a Steampak UK engine and the chimney is just a short piece of pipe I had to try the effect on and hopefully come the better weather I will take the engine apart and polish the boiler and redo the paintwork PLUS of course make a better chimney.
That steam effect looks amazing Phil !
Which technique did you use?
Thanks Jan glad you like it and when we are grandchild free I will have more time to explain how I did it
Very nice "smoke effect" Phil, and looking forward to hearing how you did it.
I also have one of these Steampak engines that I bought off Edward on ebay a year or so ago. Of course, missing the chimney like the rest...
OK here we go hope this explains what I did

first I cleaned the piece of metal tube then warmed it up with the wife's old hairdryer then sprayed a undercoat I then dried the undercoat off again with the hairdryer I then got the candle ect ready and sprayed the top white coat then while the paint was wet I lite the candle and held the flame close to the still wet paintwork and then dried it off with the hairdryer left it about a hour THEN let the grandkids have fun trying to rub the smoke effect off with a earser/rubber and NO they made no difference so job's a good un

Go on I KNOW you want to try it yourself.
Thanks Phil !
Assumed something along those lines, and will definitely try this at some point.
Thanks Jan hope you do give it a go
Here's a close up
Nicely done Phil.
I'm thinking flat bases of considerable surface area may be a bit tougher to get an even smoke job done on them, but obviously they did it okay in the old days, so it must still be possible today!?!?
Thanks Daniel i'm sure I got a old base somewhere so best I have a go on a bigger area
More practise needed
I did this base last year sometime.
My first attempt at it .
I think that looks pretty darn good Dennis!
Better than I would do I'm sure.