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<font face="Arial">The article said a cigarette was suspected.</font><br>
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<div class="moz-cite-prefix">On 07/26/2015 11:31 AM, e-mail
frank.wood95 wrote:<br>
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cite="mid:CAOAzDYrDEzyzM1ZqbfKy=YEobBg2rjfqRMzxcrehh5yCH8kUpQ@mail.gmail.com"
type="cite">
<pre wrap="">What was the source of ignition?
Many years ago, one of our set designers planned to use polystyrene to
make some gothic arches. As LD, I was worried, so I conducted an
experiment. I set up a 2' square panel, from the packaging of a
domestic appliance, and pointed a 1KW VNSP Par at it from about a foot
range. After an hour, the polystyrene panel was noticeably thinner
where the beam had fallen on it, but that was all.
OTOH, I remember going up a wooden step-ladder to adjust the 1KW PAR
cans I was using in booms. By the time I had finished, smoke was
coming from the ladder.
Safety experts, please advise.
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<pre class="moz-signature" cols="72">--
Jerry Durand, Durand Interstellar, Inc. <a class="moz-txt-link-abbreviated" href="http://www.interstellar.com">www.interstellar.com</a>
tel: +1 408 356-3886, USA toll free: 1 866 356-3886
Skype: jerrydurand
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