[Noisebridge-discuss] PLEASE READ: Laser Cutter Threat Model

Jonathan Lassoff jof at thejof.com
Mon Apr 9 17:05:26 PDT 2012


On Mon, Apr 9, 2012 at 5:02 PM, Will Sargent <will.sargent at gmail.com> wrote:
> Hi all,
>
> So some of you may remember from the last meeting that Rayc moved the laser
> cutter from the backroom to the front room, and set up a venting system.  I
> vaguely remembered that a number of people were deeply paranoid about
> setting up the system to vent correctly, and so I asked around.
>
> The threat model posed by the Laser Cutter and the reason it has to be
> vented is not "laser cutter gives off stinky fumes."
>
> The threat model is "When used with the wrong substance, laser cutter fumes
> can potentially contain cyanide gas that can kill everyone in the room."
>
> http://www.atxhackerspace.org/wiki/Laser_Cutter_Materials
>
> I asked someone from AMT to come by the space to check it out, and the
> verdict is "I believe the current ventilation setup is fine for indoor
> plywoods, acrylic, and natural materials however it is most certainly not
> sufficient for anything toxic or chlorinated."
>
> So NO, IT IS NOT SAFE.

My reservation about the current system is that it takes a lot of
extra airflow to keep the whole vertical column of air moving all the
way to the roof.

--j


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