Ключевые слова: background, blade, caliber, circle, circular, closeup, craft, cutting, diameter, diamond, disk, electric, engineering, equipment, foundry, grind, grinder, hand, industrial, industry, instrument, knife, light, machine, machinery, machining, manual, manufacturing, metal, power, rotary, safety, saw, sharp, sharpen, sharpener, sharpening, sharpens, spark, speed, steel, stone, surface, technology, tool, tools, view, wheel, worker, workshop,