Thursday, February 07, 2008


Shopping for less noise

Back when I was designing Godzilla year before last I discovered that steel threaded rods (3/8-24) tended to get quite loud when you drove them much over 5-10 mm/sec. As the thrust collar moved up and down the rod you'd have a situation rather like a guitarist moving his fingers up and down the frets on the neck of his instrument. The spinning rod would have several resonance points where it would get quite loud as the positioning table moved back and forth.

(Read the whole story)

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