Google was handing out goggles at Bay Area maker faire. They were simple acrylic, but should function decently well as safety glasses (this from someone operating his laser with no enclosure of any sort for more than 2 years now… so I am not exactly a safety guru)
they sell some good laser glasses around here and they have miniature fire extinguishers the size of a spray paint can.
if you have any issues I can purchase what you need and ship it to you after it arrives. http://www.lowes.com/pd/Tundra-Tundra-Fire-Extinguishing-Spray/3009906?cm_mmc=SCE_PLA--ToolsAndHardware--Smoke-_-3009906:Tundra&CAWELAID=&kpid=3009906&CAGPSPN=pla&store_code=2579&k_clickID=42f6cd19-739c-4901-8ad4-ed240fc56164
as far as fire extinguisher goes, I plan on using the dry chemical powder one for absolute emergencies only. for small little oops fires, I plan on using a spare tank of argon gas from my welding kit with an extra regulator set to about 15CFM with a tube going into the chamber. if something decides to flare up I can stop the laser and flood the chamber with argon.
I picked up two pairs of laser-safety eye protection from vs eyeware for around 35 bucks each (on a slight sale). Don’t know much about LSEP, but they feel sturdy, and have the protected wavelength(s) printed on each side of the frame.
I also grabbed two pairs of the work glasses from Google at SF Maker Faire. They are CE certified and rated ANSI Z87.1-2010. The packaging states “These safety glasses block 99.9% of ultraviolet light up to 380nm. THEY DO NOT MEET RADIANT ENERGY TRANSMISSION REQUIREMENTS.” (their caps)
I wasn’t sure they were real protective glasses, but the lady at the google booth told me that they were, and to grab an extra pair, mentioning that “when we place an order for a couple of hundred-thousand of something like this, they come out very cheap per unit. A lot cheaper than eyes.”
Aluminum tape would be better than duct tape. So long as there is no optically clear path (to that wavelength), you are solid.
Really as long as the passthrough is well below your eye level, you are pretty much golden. The beam has to reflect off something inside, then get through the slot. So only things in a straight line from slot to item on cutting bed are in danger. One of the things in THAT line could reflect AGAIN and send it to your eyes… but now you have TWO flawed mirrors with horrible transmission rates helping keep you safe.
oh sure, now I’m thinking I need to install the glowforge in a concrete bunker with a retina scan, voice print, and blood sample required for safety purposes along with a 48 page waiver to enter and use?