[hackspacebristol] Contact: Laser Cutter

Tom Gardner tggzzz+hs at gmail.com
Sun Apr 14 11:03:01 UTC 2013

matthew venn wrote:

before using the laser cutter, you have to be inducted. That takes care of
the H&S.

Necessary but not sufficient. In some of my other activities I could kill
or injure myself, or worse others. People being people, in such an
environment it has been found to be *necessary* to:

   1. have key safety notice reminders at the "point of delivery" (as well
   as in the full SOP manual, of course)
   2. have regular "safety refreshers", typically annually

Whereas (2) might well be overkill in this situation, (1) is more arguable.
In such cases it is prudent to take *simple easy* precautions.

Many times I've seen people do things they *think* they are OK to do
(through ignorance, not stupidity nor malice), but they actually aren't --
and they could have got themselves/others in serious danger.

 Metal and mirrors are out. Mirrored acrylic is OK.


On 14 April 2013 11:06, Tom Gardner <tggzzz+hs at gmail.com> wrote:

>  matthew venn wrote:
>  On 12 April 2013 14:30, John Minton <contact-form at bristol.hackspace.org>wrote:
>> Name: John Minton
>> I've got a project which will require laser cutting A4 3mm Mirrored
>> Acrylic into various segments.
> British Telecom labs used to show new employees truly gruesome videos
> of what can happen with lasers - some specifically including metal
> acting as a mirror. There were reports of people vomiting after viewing it.
> If you weren't frightened, you were a dangerous idiot. Much nastier
> than chuck keys left in lathes when they were started up.
> They also had signs around the labs stating "*Do Not Look Into The Laser *
> *
> **With Your Remaining Eye*". People Got The Message.
> IIRC the laser cabinet has a window panel. Do the manufacturers state
> that the laser beam cannot escape through the window?
> Do the manufacturers specifically state that it is OK to cut metal and
> mirrors?
> IMNSHO it would be wise to attach a placard defining how to use (and
> not use) the cutter safely to the cutter itself. If there is an accident,
> it
> often becomes necessary to demonstrate that "good practice" was
> being followed; if not the insurance company might be able to deflect
> financial responsibility, potentially onto the directors.
> Of course, having such info readily to hand also reduces the chances
> of an accident, which is most valuable in itself.
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