Hi Mick
Glad you are enjoying doing a bit more to your Comet.
I use the following webb site,I found them and stuck with them because of
the service and delivery.
http://www.airbrushes.com
I bought the Sprint Jet Mini Air compressor,max 80 psi I work at between 20 and 35 psi,it
depends on how much you thin the paint.
I have 2 Air brushes
First one I bought was the Iwata Revolution BCR,it uses a little bottle for the paint
underneith the brush.
Later I added the Iwata Revolution CR which has a medium size cup on top and I have
a smaller nossle in that one.
Its great for detail and dust effects etc.
Plenty of playing arround spraying on bits of tin to practice and see what it does.
I only ever spray acrylics,nice and easy to clean with water and cleaner.
They sell all the stuff like cleaner,thinners paint,cleaning brushes etc,I use the
Lifecolour Range of paint.
Post some pics on your Comet posting as you go allong.
Cheers
Phil