<font color="#3333ff">Hello,</font><div><br><div class="gmail_quote">On Thu, Jan 26, 2012 at 9:36 AM, Alice Scanland <span dir="ltr"><<a href="mailto:alice.scanland@gmail.com">alice.scanland@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">David, <div><br></div><div>You do bring up an interesting point here. If it is appropriate for the person working on the project to be using a respirator is it ok for the people also in the room to not be wearing a respirator? </div>
</blockquote><div><br></div><div><font color="#3333ff">Rule of thumb, if you can smell it, you should be wearing gear. Analytically, i</font><span style="color:rgb(51,51,255)">f there is no barrier between you and the local work area that stops air transfer, or if you are not far away enough to not smell it, then you will also need gear.</span></div>
<div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>I had noted that 2storyprops use respirators for some projects, but those fumes are still in the room around the rest of us. Often times that work is being done outside (which I'm sure helps) but the doors are usually open and the smell certainly is wafting into the building. Is the danger also wafting into the building? </div>
</blockquote><div><br></div><div><font color="#3333ff">If you can smell it, then hey.</font></div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><br></div><div>I don't understand the dangers from these things, I have not worked with the mediums and therefore not looked into the safety. What are your thoughts on this? Should I supply myself with a respirator for the times when plexiglass is being cut, and bondo/fiberglass being worked?</div>
</blockquote><div><br></div><div><font color="#3333ff">Yes, your choices are to wear your gear or stay out of the area. In most shop setups, it is typical to do the most noxious work when people are not around to reduce exposure. </font></div>
<div><font color="#3333ff"><br></font></div><div><font color="#3333ff"> - Ethan</font></div><div><font color="#3333ff"><br></font></div><div><font color="#3333ff">P.S. Take note, the dangers include fumes, dust and smoke. Not all of which will be detectable by smell. Also, for your reference, here are the industry (OSHA) standards for <a href="http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=9734">ventilation</a> and <a href="http://www.osha.gov/pls/oshaweb/owadisp.show_document?p_table=STANDARDS&p_id=12716">respiratory protection</a>.</font></div>
<div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><br></div><div>Thank You, </div><div>Alii</div><div><br><br><div class="gmail_quote"><div class="im">On Thu, Jan 26, 2012 at 9:23 AM, David Reimer <span dir="ltr"><<a href="mailto:davidreimerartist@gmail.com" target="_blank">davidreimerartist@gmail.com</a>></span> wrote:<br>
</div><div><div class="h5"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hey everyone. I just wanted to toss this out there in hopes that members become aware of other safety concerns with the laser cutter. A few people have been cutting plexiglass on the laser cutter, and when that happens, it vents out into the rest of the shop. Not only does it just smell bad, but the odor is actually toxic and harmful to breathe in. I'm aware that the cutter is set up to vent out of that area, but when dealing with toxic fumes, you can never be too safe, so I'd just like to encourage members who regularly work with plexiglass on the cutter to pick up an appropriately-rated respirator (not a dust mask, a <i>respirator</i>). 2StoryProps uses respirators when we work with our fiberglass and bondo. So I'd just like to encourage everyone to be safety-minded when burning plastic-based materials on the laser cutter.<br>
<br>David Reimer<br><br><br><br><div class="gmail_quote"><div><div>On Thu, Jan 26, 2012 at 8:40 AM, David <span dir="ltr"><<a href="mailto:ainut@knology.net" target="_blank">ainut@knology.net</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>
<u></u>
<div bgcolor="#ffffff" text="#000000">
I'm not a safety Nazi but there was no mention of the laser goggles on
the wiki. Do we even have any? Highly recommended whenever the beast
is in operation.<div><br>
<br>
David Merchant<br>
<br>
<br>
<br>
Enabrin Tain wrote:
</div><div><blockquote type="cite">
<div style="font-size:10pt;font-family:arial,helvetica,sans-serif">
<div><span>I think Candleknight did update the wiki page:
(<a href="https://256.makerslocal.org/wiki/40_Watt_Laser_Cutter" target="_blank">https://256.makerslocal.org/wiki/40_Watt_Laser_Cutter</a>)</span></div>
<div><span>/me applauds</span></div>
<div><span> :-D<br>
</span></div>
<div><br>
</div>
<div style="font-family:arial,helvetica,sans-serif;font-size:10pt">
<div style="font-family:times new roman,new york,times,serif;font-size:12pt">
<div dir="ltr"> <font face="Arial">
<hr size="1"> <b><span style="font-weight:bold">From:</span></b>
Joshua Pritt <a href="mailto:ramgarden@gmail.com" target="_blank"><ramgarden@gmail.com></a><br>
<b><span style="font-weight:bold">To:</span></b> General discussion
about makerslocal <a href="mailto:general@lists.makerslocal.org" target="_blank"><general@lists.makerslocal.org></a> <br>
<b><span style="font-weight:bold">Sent:</span></b> Wednesday,
January 25, 2012 8:37 PM<br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [General]
Laser Cutter Class Announcement: 1/31/12 @ 7:00pm<br>
</font> </div>
<br>
<div>
<div>I hope someone takes notes and puts it on the wiki!</div>
<div>On Jan 25, 2012 7:43 PM, "Justin
Richards" <<a rel="nofollow" href="mailto:ratmandu@gmail.com" target="_blank">ratmandu@gmail.com</a>> wrote:<br>
<blockquote style="border-left:1px solid rgb(204,204,204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">I've
been experimenting with it a lot as well, but i'll be there also. It's
always good to see other peoples opinions and results with things<br>
<br>
<div>On Wed, Jan 25, 2012 at 6:21
PM, WebDawg <span dir="ltr"><<a rel="nofollow" href="mailto:webdawg@gmail.com" target="_blank">webdawg@gmail.com</a>></span> wrote:<br>
<blockquote style="border-left:1px solid rgb(204,204,204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div>Ill be dere.</div>
<div>
<div>
<div>On 25 Jan 2012 18:08, "Enabrin Tain" <<a rel="nofollow" href="mailto:enabrintain@yahoo.com" target="_blank">enabrintain@yahoo.com</a>>
wrote:<br>
</div>
</div>
<blockquote style="border-left:1px solid rgb(204,204,204);margin:0pt 0pt 0pt 0.8ex;padding-left:1ex">
<div>
<div>
<div>
<div style="font-size:10pt;font-family:arial,helvetica,sans-serif">
<div></div>
<div>according to the fount of all human knowledge: <br>
</div>
<div><br>
</div>
<div>Fiberglass: <span> </span>yes, sans polymer
(<a href="http://www.cnczone.com/forums/laser_engraving_cutting_machines/46407-can_laser_cutter_cut_fiberglass.html" target="_blank">http://www.cnczone.com/forums/laser_engraving_cutting_machines/46407-can_laser_cutter_cut_fiberglass.html</a>)</div>
<div>Carbon fiber: No
(<a href="http://www.pololu.com/catalog/product/749" target="_blank">http://www.pololu.com/catalog/product/749</a>)</div>
<div>Kevlar: Requires 1,500watts?
(<a href="http://www.ambox.com/laser-cutting/materials/kevlar.html" target="_blank">http://www.ambox.com/laser-cutting/materials/kevlar.html</a>)</div>
<div><span> </span>I
dunno about this one, there was very little about Kevlar... <br>
</div>
<div> </div>
<div>[-CO-C6H4-CO-NH-C6H4-NH-]n doesn’t have any Cl in it, so
experimenting
with a piece <span> </span>shouldn't be disastrous.
;-)</div>
<div><br>
</div>
<div>All that said, ours is a 40W laser so there are things
that could be cut by a more powerful laser, that ours can't.<br>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</blockquote></div>
<<<snip>>><br>
</div>
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<br>-- <br><font style="color:rgb(51,51,255)" size="4">David Reimer</font><br>
<span style="color:rgb(153,153,153)"><a href="tel:256-323-0853" value="+12563230853" target="_blank">256-323-0853</a>, <a href="mailto:davidreimerartist@gmail.com" target="_blank">davidreimerartist@gmail.com</a></span><br style="color:rgb(153,153,153)">
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