Ключевые слова: abstract, background, billet, cnc, cnc machine, cutting, ecology, economy, environment, environmental, fabrication, filings, gas, heavy, industrial, industry, iron, laser, machine, machinery, manufacture, metal, molten, oxyfuel, pattern, piece, plasma, plate, processing, production, recycling, resource, round, rubbish, rust, rusty, scrap, shavings, shining, silver, square, steel, structure, structure steel, texture, waste, workshop,