[ATM] whale song

[Bill Prewitt <bprewitt@neo.rr.com>]

I've been down here in the basement listening to my polishing machine 
working on the 30" for the last week. Now that its down to slowly 
removing pits from a smooth surface, the lap is singing its heart out. I 
recorded a few bars, filtered out the motor hum, and uploaded it.

http://www.astrocaver.com/polishing2.wav

At first it sounded like geese in a barnyard, but now its more like a 
pod of whales.
This is actually useful, as I can tell when its time to pick up the lap 
  to rinse off spent CeO from the channels and re-press.
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