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#41
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![]() "Winston" wrote in message ... 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. Trevor. |
#42
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On Mon, 15 Aug 2011 15:37:36 -0400, Phil Hobbs
wrote: Winston wrote: Phil Hobbs wrote: (...) One approach would be to make a casting of the outer part of your ear canal with something like ShapeLok. I've been meaning to try that myself. One would want to cast around a hollow plastic tube to vent air back into the canal in order to avoid an ER visit to remove the finished casting... ![]() --Winston I wasn't suggesting pushing it all the way down to the eardrum, silly. Cheers Phil Hobbs Doesn't matter. A half a gram of media is enough to rip your eardrum if you are pulling a vacuum on it as you draw out the casting. Even if it only goes half way in. Good call, Winston. |
#43
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![]() "Trevor" wrote in message ... "Winston" wrote in message ... 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. |
#44
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Arny Krueger wrote:
wrote in message ... wrote in message ... 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 |
#45
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Posted to sci.electronics.design,rec.audio.tech,alt.audio.equipment
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![]() "Winston" wrote in message ... Arny Krueger wrote: wrote in message ... wrote in message ... 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. |
#46
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Arny Krueger wrote:
wrote in message ... Arny Krueger wrote: wrote in message ... wrote in message ... 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 |
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