Good morning Dennis
This is the airbrush kit I bought - from RDG Tools - http://www.rdgtools.co.uk/
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I later added another airbrush set - specifically for the gravity feed res on top as I found that you don't use a lot of paint on toppers
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For a very good instructional set of videos on airbrushing can highly recomend a set of 7 videos on youybe :- Airbrushing Wildfowl Carvings.
The cleaning during painting is the method I have adopted and works well - it is important not to let any paint (acrylic) dry in the brush.
Milliput is a 2 part epoxy putty and for something that small I don't think you need any wire, one of the stickmaker I know drills antler coronet to add a wood shape and then builds it up with 2 part epoxy to shape and carve a animal head - lokks good when finished and painted