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Thanks Heinz
nice comments are always appreciated
And Hunter what the hell is dry-brushing?
is that um getting a brush and just brush and brush?
It'll work, but it will be VERY expensive! The cost of enough jars of Tamiya paints would work out at about £140 in the UK, that's roughly $300NZ to $350NZ !!!
A litre of synthetic enamel ranges between £9 ($25NZ) and £15 ($35NZ). You can even use ordinary household gloss paint. You don't have to get the exact shade, you can mix it yourself. For example, Royal Blue and black, to get the darker shades, the same with white for lighter shades, and so on.
I'm guessing you want to use the Tamiya acrylics because they are the right shade, and you're used to them but, believe me, it's an expensive way to go!
When I had my old Land Rover, I coach-painted it in synthetic enamel. Three coats, covering approximately 300 square feet. It looked like polished glass, in dark green. Cost (OK it was 11 years ago)? £20 ($45NZ) total, including the undercoat!