Ключевые слова: circular, construction, cut, cutting, danger, detail, disc, electric, energy, engineering, engraving, equipment, expertise, fire, flash, grind, grinder, hand tool, heat, hot, industrial, industry, iron, light, machine, machinery, making, manual, manufacture, manufacturing, mechanic, metal, power, power tool, production, protection, safety, smoke, spark, sparks, speed, steel, technical, technology, tool, work, work tool, worker,