From: dlzc1@cox.net   
      
   Dear Mark Thorson:   
      
   On Tuesday, May 24, 2016 at 9:25:04 PM UTC-7, Mark Thorson wrote:   
   > Maybe what you need is a metal bellows.   
   > If you need a gas-tight connection to glass,   
   > you can make a Housekeeper seal with copper.   
   > This is something you can do yourself with   
   > a Bunsen burner.   
      
   I've seen it done with an e-beam, at low temperature also.  But really high   
   volume, cause the accelerator guys all drive expensive cars.   
      
   David A. Smith   
      
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