Ключевые слова: background, blade, circle, circular, closeup, construction, craft, cutting, diamond, disc, disk, electric, engineering, equipment, factory, foundry, grind, grinder, hand, industrial, industry, knife, light, machine, machinery, machining, making, manufacture, manufacturing, metal, safety, sharpener, sharpening, spark, speed, steel, stone, surface, technology, tool, welding, wheel, work, worker, workshop,