'DYI: underwater camera''

'DYI: underwater camera''

Post by Fred Oberbuchn » Mon, 14 Mar 1994 05:35:15


Quote:


>>I heard of a guy that tried this. His field test consisted of putting
>>his camera in and going "live". Too bad he almost ended up in a different
>>state than his test (ie. dead). He was filming, rested that housing against
>>his leg and it imploded, shredding his wetsuit and his leg. Can you spell
>>"ouch". Fortunately, it wasn't against his face when it imploded. Fractured
>>plexiglass does tend to be somewhat sharp. If you are really going to do
>>this, please be smarter in your testing. At the very least, suspend the
>>box on a rope so it doesn't injure anyone.

>You "heard of a guy"?  Surely you can make a bogus sounding story like this
>more believeable by writing "I know of a guy that tried this" or "Someone
>in our dive club tried this". Or you could have written that "he was
>kneeling on the plexiglass case when it collapsed, sending shards into
>his wetsuit and leg" and I would have bought it.

>doug

Doug:

I apologize for you lack of undestanding of the English language. I naturally
assumed that everyone would understand the meaning of "I heard of a...".
Because you obviously do not it means I have the story second/third hand.
Yes, you are correct that I could have tried to "sell" this story better
by stating that I heard or saw this directly. Unlike yourself, my purpose
in contributing to this group was intended to forewarn people so they do
not get injured or injure others rather than making up exciting stories and
attempting to make them sound like my own personal experiences.

I had assumed that divers were a group of people more concerned with each others
well-being therefore I relayed what I had heard through possibly several levels
of indirection. If I offended anyone out there by my cautions, please ignore my
postings....I do not, however, look forward to seeing you as a statistic.

Regards,
Fred

 
 
 

'DYI: underwater camera''

Post by doug ho » Wed, 16 Mar 1994 00:38:40

Quote:



>>>I heard of a guy that tried this. His field test consisted of putting
>>>his camera in and going "live". Too bad he almost ended up in a different
>>>state than his test (ie. dead). He was filming, rested that housing against
>>>his leg and it imploded, shredding his wetsuit and his leg. Can you spell
>>>"ouch". Fortunately, it wasn't against his face when it imploded. Fractured
>>>plexiglass does tend to be somewhat sharp. If you are really going to do
>>>this, please be smarter in your testing. At the very least, suspend the
>>>box on a rope so it doesn't injure anyone.

>>You "heard of a guy"?  Surely you can make a bogus sounding story like this
>>more believeable by writing "I know of a guy that tried this" or "Someone
>>in our dive club tried this". Or you could have written that "he was
>>kneeling on the plexiglass case when it collapsed, sending shards into
>>his wetsuit and leg" and I would have bought it.

>>doug

>Doug:

>I apologize for you lack of undestanding of the English language. I naturally
>assumed that everyone would understand the meaning of "I heard of a...".
>Because you obviously do not it means I have the story second/third hand.
>Yes, you are correct that I could have tried to "sell" this story better
>by stating that I heard or saw this directly. Unlike yourself, my purpose
>in contributing to this group was intended to forewarn people so they do
>not get injured or injure others rather than making up exciting stories and
>attempting to make them sound like my own personal experiences.

>I had assumed that divers were a group of people more concerned with each
>others
>well-being therefore I relayed what I had heard through possibly several levels
>of indirection. If I offended anyone out there by my cautions, please ignore my
>postings....I do not, however, look forward to seeing you as a statistic.

>Regards,
>Fred

I'm perfectly willing to accept that there might be a risk from imploding
containers. So we'll put it to the internet: tell us about your first hand
experience with an implosion device. Tell us what your device was made of and
what it was meant to be used for. Mention depth and water temperature at the
time of the implosion. Rate your implosion event on a scale of 1 to 10 where
1=no danger to life and 10= possible serious injury. Try to be serious about
this. If enough people with real life experiences share them with us, then
I will have learned something never written about before in PADI manuals/
scuba magazines/internet newsgroups. As a side benefit, Fred won't have
to write "I heard of a guy" anymore.

doug

 
 
 

'DYI: underwater camera''

Post by Bryan Douglas Crawfo » Wed, 16 Mar 1994 08:53:50

Quote:

>I'm perfectly willing to accept that there might be a risk from imploding
>containers. So we'll put it to the internet: tell us about your first hand
>experience with an implosion device. Tell us what your device was made of and
>what it was meant to be used for. Mention depth and water temperature at the
>time of the implosion. Rate your implosion event on a scale of 1 to 10 where
>1=no danger to life and 10= possible serious injury. Try to be serious about
>this. If enough people with real life experiences share them with us, then
>I will have learned something never written about before in PADI manuals/
>scuba magazines/internet newsgroups. As a side benefit, Fred won't have
>to write "I heard of a guy" anymore.

I can't say that I've ever encountered an imploding container underwater,
but I do know that vaccuum filtration flasks can implode with very serious
consequences.  Since the maximum pressure differential possible using
vaccuum filtration is 1ATM, I have no doubt that a container could implode
most ***ly underwater.  However, unlike in a lab situation, where the
flying shards of flask could travel a great distance (which is why we run
our filtrations behind a plexyglass shield), I don't think shrapnel would
go very far underwater.  If, however, you were holding a container which
imploded, I don't doubt that you could be seriously injured.

Can anyone describe an implosion event underwater?