XPost: sci.electronics.design, alt.audio.equipment   
   From: Winston@BigBrother.net   
      
   Arny Krueger wrote:   
   > "Winston"  wrote in message   
   > news:j2ejah0ruf@news4.newsguy.com...   
   >> 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.   
   >   
   > Until I understood the process a whole lot better than I do, I would retain   
   > the services of professional who is trained and experienced in doing this   
   > kind of thing.   
      
   That makes sense.   
      
   I was aiming for a visceral understanding of the physics   
   rather than a 'how to' guide.  :)   
      
   --Winston   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)