XPost: sci.electronics.design, alt.audio.equipment   
   From: Winston@BigBrother.net   
      
   Arny Krueger wrote:   
   > "Trevor"  wrote in message   
   > news:4e49e3e4$0$3035$afc38c87@news.optusnet.com.au...   
   >>   
   >> "Winston"  wrote in message   
   >> news:j2cmd602uvf@news3.newsguy.com...   
   >>> Casting a piston to the inside of the ear   
   >>> canal and then removing it is gonna cause   
   >>> a significant vacuum.  Sounds painful, at least.   
   >>> At worst, a burst eardrum and inner ear   
   >>> infection?  Ewww!   
   >>   
   >> Nope, that's how ear moulds are made for hearing aids, and custom fitted   
   >> IEM's. Of course one should probably know what they are doing before   
   >> attempting it.   
   >   
   > It appears that a critical step is blocking the ear canal with a cotton ball   
   > that has a thread attached to it so that you can pull it back out easily and   
   > reliably.   
      
   Trevor and Arny, I guess that means there is a large   
   enough air pocket in the canal that a dangerous level   
   of vacuum is not attained.  This will be what I learned   
   today.   
      
   --Winston   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)