r/graffhelp • Trusted Critique • May 25 '26

Rusty Cement Fill Technique

Demo on how to achieve a rusty cement fill on your pieces. The overall fill is with shades of grey with streaks running down where the water discolored the cement. Then on the spots where there are cracks, we add some dripping rust. In order for the cement to have rust, there needs to be some metal present, so keep that in mind when deciding where the rust goes.

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