Yes, a very small O-ring also can be at nozzle itself too, and some airbrush had it at back cap meets the body also.
it should be safe if just clean the cup, needle, nozzle cap and nozzle. and spray out the paint.
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Hi sifu, if you, which brand/kind of paint will you use/mix to achieve the gold like below?
tried mr color gold, its too dark and brown
tired mr metal color gold, its too light and 'white'
besides, do u top coat on metallic or metal paint? gloss, flat, semi?
if gloss, it will become shine and feel so toy.
if flat?
if semi?
if no topcoat, it really oxidize and affect the paint after long time?
Attached Photo is from internet.
My 2 cents, paint with a base of gloss black then silver, then finish with a layer of clear yellow mix with gold Color.