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

Danny O'Brien danny at spesh.com
Mon Apr 9 21:14:50 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.
>

AMT and Noisebridge and almost anywhere else say not to cut such materials
on the lasercutter. See:

https://www.noisebridge.net/wiki/Lasercutter#Things_you_should_not_put_in_the_laser_cutter
http://wiki.acemonstertoys.org/Laser_Cutter#Things_that_can_.2F_cannot_be_lasered

I don't recall anyone saying that the rear space ventilation system was
acceptable for these categories of material either.

Another useful step would definitely be to put that list up by the
lasercutter, if it's not already there. I'd suggest taking this to the fab
list, where people have discussed this previously.

d.



>
> Will.
>
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>
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