SINGLE V DUAL ACTION

SINGLE: the trigger controls the air only; either on or off. The paint flow is governed by a wheel at the tail-end of the tool. Altering the flow while spraying is not easy, making weathering particularly difficult. DUAL: the trigger releases the air when depressed. Moving it back and forth also regulates the paint flow. Dual-action gives the user greater control, permitting precise painting or weathering effects. With a top-button trigger type, asking the index finger to do two things at once takes a little practice and fatigue can be an issue when working for longer spells. Pistol-grip tools are also dual action, with the trigger releasing the air as soon as it’s moved backwards. The further back it’s depressed, the more paint flows out of the nozzle, just like a top-button tool.