Artist Toolbox - Street Art: SpraypaintSo spraypaint. What can we say about spraypaint that people don't already know... It comes in a can under pressure with solvent and is propelled out though a nozzle at the top onto surfaces. But I can probably guess you guys know that already without being too wrong. Below is a cut away diagram of a spraypaint can; The important parts for the artist to know about are the air(/propellant), the caps/s and the ball.More Like This
The ball is the easiest to talk about is the ball, it's there for mixing the paint. Simple as that really, but importantly you have to shake the can. If it's the first use of the can, or first in a ling time, then you have to shake that can like Miley Cyrus twerks. The more you shake it the less likely you are to block your valve/cap. I've found that some brands take a hell of a load more shaking than others, particularly anything that has 'great coverage/opacity' on the can, and for some reason light colours need more agitation than dark.
Propellant varies from can to can but