August 19 2007 | Sokol's air intake #2

I then glued this master to an appropriate shape to do the vacu-forming.

August 19 2007 | Sokol's air intakes #3

I tried different ways of heating the plastic -under the lit gas oven I only managed to burn myself while holding the thick (1,5mm ) plastic sheet, under one single flame, icouldn't manage to get enough plastic melting!
So i finally got round this stupid problem by holding the sheet of plastic under *4* different candles!

August 19 2007 | Sokol's air intakes #4

When the plastic begins to change shape and to lower, press it under the shape.
Okay, this is how it looks like, notice the stretched holes, that's actually an accident, because the plastic was too close to the light, but notice how this could be used quite efficiently to create a really rusty air intake!

August 19 2007 | Sokol's air intakes #5

Another view with 2 different tries. 

August 19 2007 | Sokol's air intakes #6

And here are the 2 parts after trimming, ready to be joined and mastic-ed!

August 19 2007 | Sokol's air intakes #6

here is the final air intake, okay, the shape is not *that* round, but I promise it won't be seeing too much in the final diorama :)
I added a bit of plastic on the bottom to end up the shape as well as some D shaped evergreen sheet to circle the 2 openings of the round parts..

August 24 2007 | Sokol's bells

So only 1 picture for such an extensive job.. anyway,  here you have some thermoformed plastic for the bell, bent brass tubing for the various intakes and plasticard

August 24 2007 | Sokol's chimney

 And here is the chimney complete with all its accessories, i am quite pleased with it :)