Homebrew PCBs

In a message dated 5/6/2005 12:41:53 A.M. Eastern Daylight Time,  
robert.hedan@... writes:

Are  there other dangers besides sound waves?  I can easily protect  against
that, I have high-quality ear protectors used at the firing  range.

If a chamber implodes, can debris be projected  outwards...?

Or is the contained liquid a source of danger?  If  so, I could easily drape
the unit with several layers of thick cloth.   If there are no metallic
projectiles, that should be enough.

If I  could afford a new vacuum chamber, I'd buy one.  But the realities  of
family life and trying to set up a lab is not compatible.  I have  to cut
corners, but I'm also trying to cut them as safely as I  can.

Robert
:)




Sound waves can shatter your ear drums. Your heavy layers of  cloth will 
probably not help much here but your ear protectors are a good bet.  While it is 
true that explosion is worse, implosion carries some of the same  issues. Stuff 
can fly. Here a heavy blanket is best. The other thing that most  people 
don't think about is shock factor. What are you doing when it blows (Or  sucks in 
this case! 8>)) LOL If you are cutting out a previous mold you could  
seriously cut yourself or others.
PLEASE! I am not trying to scare you! Just be prudent and be  careful! Keep 
the kids out of the way! ALWAYS ALWAYS test out a new device of  this type 
OUTSIDE for the first couple of times! If your going to pull it down 2  
atmospheres normally pull it down to 3 several times as a safety check!  A  failure 
outside is a whole lot safer then inside!
In closing just be safe! I have 3rd degree burns over 33% of  my body from a 
stupid mistake 20 years ago that to this day remind me to be  careful!
 
Ray Russell
NMRA-40609
General Contractor
Norfolk &  Western Railroad
Pocahontas Division
Circa 1958
Visit The "NEW"  Pocahontas Website at:_ Click here: N  & W Pocahontas  
Division_ (http://members.aol.com/rruss45826/public_html/index.html) 
http://members.aol.com/rruss45826/public_html/index.html

OR_ Click here:  Pocahontas Home_ 
(http://milliron.home.sprynet.com/Pocahontas/Pocahontas1.htm)  
For the old website!  
http://milliron.home.sprynet.com/Pocahontas/Pocahontas1.htm


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