This heavy stainless steel rod was bought in the scrapeyard and it’s been used as a handrail for at least 30 years. Do any of you guys know what was i’ts original purpose?
Answer: It’s a rotor for a fluid driven motor. Commonly used in oil field applications to drill or pump. Search mud motor rotors for more examples.
after drilling a hole inside the screw. A reamer has sharp ridges and are set in a clockwise direction