beautiful close-up of tangle from metal shavings when machining

16x9 abstract accuracy aluminium aluminum arbor artistic background beautiful black blank blue bolt chips closeup cnc curled design detail distinctive empty engineering exactness filings flake from green heap helix horizontal industrial industry iron lathe lead line machinetool machining metal metallic metric nopeople precision processing revolve rotate sawdust scrap shaft sharp shaving shavings skill skilled space spiral splinter steel striped swarf tangle technical technology thread trade trapezoid trapezoidal turn turning twisted when whitworth work