If you're starpointing or just pointing around your room away from reflective objects you don't need goggles. If you're pointing near reflective objects, your face is close to the laser, you're burning stuff, you need to accurately point your laser at something, you're going to be/need to be...
This summer before I got my first high powered laser (50 mW 532 nm) to get a visible beam from a <5 mW 660 nm I would spray compressed air upside down, although it smells terrible.
Re: O-like 532 nm 150 mW laser for trade!
New cute pocket Green laser 150mW /adjustable [OLCGL150] - $99.99 : Welcome to O-Like.com, Your source for laser products
"Would you possibly be interested in trading for a 632nm hehe? I have a bare tube one here with PSU, it is DC though and needs a separate DC 12V supply. No worrys just wondering, thanks!"
Just a few questions about this. Does he mean HeNe, or is there an HeHe laser out there? He says it has a...