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Honestly the little 3mw red one I have is more than bright enough, and a 15mw green I picked up on Amazon ages ago was beyond bright enough... I'll just grab one of those again I guess, then.

Any suggestions for where to get a small 'pen' form-factor laser that could run continuously for a few hours?

So awhile back I was on here and picked up a 2w blue lazer from lazeerer (or is it lazereer?). It was very nice and I was very satisfied with it, until I mistakenly handed it to a friend. He put in two half-sized batteries thinking it would be twice as bright and turned it on before I realized...

Ok, cool. I'll wait for that PM, then. :)

Re: Frustrated due to delays :/ I think I understand better now, and I'm sorry. Being so new to this really puts me at a disadvantage, I had no idea you were so busy, and was just paranoid of getting ripped off again. I'm sorry that I took this overboard; like I said, I wasn't sure how to...

Re: Frustrated due to delays :/ Absolutely. I will keep this updated and close it if/when necessary.

Re: Frustrated due to delays :/ I have been told I shouldn't have to worry. Thank you all for your advice, though. Let's see how this plays out...

TL;DR: I was going through the process of buying a laser, and as a first-timer I didn't know what to expect. The builder was busy, he didn't get all my messages, and I didn't get all of his messages either. Miscommunication (or lack thereof) ensued and things sorta got ugly. Sorry. Now that...

Awesome, thanks! I recently (well not-so-recently anymore) commissioned Lazeerer to make me one, and it seems like it will be a nice build, coming in a 1.6W for $220. His prices definitely seemed to be better than the websites but he's been stretching out the schedule each time I check to see...

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for quick update: I got it in the mail, and it says it is 'generally considered low toxicity' (lol), but "inhalation of mist may cause irritation of respiratory tract". Notice it says mist and not vapor. It is...

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for Interesting theory. My glycerin is on its way from United Nuclear, where it's super-pure. If I can find it of a lesser purity (at a drugstore, for example) then I can test smell/taste. I think it has something...

sounds awesome. Perhaps you can host the pics somewhere simple like dropbox and re-embed them? I don't see anything :'(

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for I wondered about that, it's very difficult for even an 'odorless' chemical to not have a smell when it's been turned into a vapor (higher energy state and all that). And there's a purported sensitivity to...

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for Quick update: United Nuclear's chemicals are typically above 99.9% pure, and it's a great price for the glycerine ( Glycerin : United Nuclear , Scientific Equipment & Supplies ).

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for Oh and this looks like a good place to get a bottle, if you can't find it in your local drugstore or whatever. They don't say what the quality/concentration is, though, and if you don't get the USP-certified...

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for I do my research when it comes to dealing with chemicals. Do you? No, actually, it won't. The toxic substance you might be thinking of is Diethylene Glycol, formed when Glycerol/Glycerin/Glycerine is not created...

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for Who cares if it's old? I just found it and it's still just as valuable knowledge. :) And now I've added Glycerin to my small-but-growing List of chemicals to have handy.

I understand a thing or two about electronics, enough to know that decreasing the pot's resistance (R) decreases its current draw, but in a series circuit current (I) is constant, which means the diode (R in this case) draws more current. A short in a circuit reduces resistance and draws enough...

XD so true.

That's good to know.