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

Matt Joyce matt at nycresistor.com
Mon Apr 9 17:18:15 PDT 2012


Recommendation for stink control.

Build a box to place recent cuts in and let them sit there for a while
once completed before working with them.  A fume box if you will.
This will cut down on stink significantly.  Also you don't really need
a filter for working on untreated woods.  Plastics do however need a
filter.

-Matt

On Mon, Apr 9, 2012 at 5:09 PM, miloh <froggytoad at gmail.com> wrote:
>
> On Apr 9, 2012 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.
>>
>> Will.
>>
>
> A list of suitable materials was established when the LC first arrived.
> Nothing that gives off cyanide chlorine (or phosphene) has ever been
> acceptable to use.
>
> Glad you're getting caught up.
>
> -rma
>
>
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