need machine to mass produce product!
The roar was present in the first Godzilla movie (1954) and was created by composer Akira Ifukube who produced the sound by rubbing a resin-covered leather glove along the loosened strings of a double bass and then slowed down the playbackOver the years the roar has become a trademark sound of the Godzilla films and is now instantly recognizable to a large audience.
If you're starting out small - talk to local electriciansAlso plumbers have tools for bending pipes that may help you.