abrasion abstract acrylics age aged alloy aluminum area background blight board brass bright bronze brown can copper corrosion craftmanship cratches creative design detail door durable empty frame grain grey grubby grunge grungy hard hardness heavy highlight industrial iron machine machinery material metal metallic metalwork ndustry old orange out oxidated oxidized panel pattern peeled plaque plate platinum plinth polished rectangular reflection rough rushed rust rustic rusty scratch screw seamless shabby sheet shine sign space square stained stainless steel strong tablet texture textured vertical vintage worn yellow zink