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Old 03-29-07 | 12:26 PM
  #378  
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The LT
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Joined: Jan 2005
Posts: 1,170
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From: Champaign, IL

Bikes: raleigh m-60, azonic steelhead, schwinn world sport fixed gear

It is a glass coverslip that was milled out using a focused ion beam...the side walls are like that due to redeposition of the glass that is being essentially blown apart by the ion beam
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