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Comment by moron4hire | Hacker News Reader

>> not to mention it should only be used in controlled laboratory conditions by experienced researchers.

Worst advice ever.

First of all, I suspect most laser cutters are employed in industrial job shops--not research facilities--around the world. They're actually quite convenient tools. I've used them for a number of projects and it takes all of 15 minutes to train a reasonably intelligent person on how to use one safely and effectively. It's faster, cheaper, and more reliable than 3D printing for anything larger than a cigar box. I consider them safer than CNC mills, as I've only ever seen laser cutters catch on fire, but never catastrophically shatter and explode like a CNC mill.

But more importantly, "don't try this at home" is my least favorite phrase in the world. He's an adult. I'm sure he knows "these aren't toys". You're not the internet's nanny.

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You seem to make an awful lot of assumptions about someone asking where to buy lasers on an semi-anonymous internet forum, in 2014. Worst advice ever? I guess because you've only seen lasers catch fire, both these statements can be taken as truths.

Irrelevant anecdotal evidence and exploding CNC straw man arguments aside, lasers are dangerous and in ways that aren't familiar to most. I certainly encourage pursuit of any worthwhile scientific or engineering endeavor, but just like I don't want intern doctors treating Ebola patients without prior explicit experience or safe equipment, I prefer not to find out what accidents a handheld device that can blind someone from miles away bring from the hands of a novice internet laser DIYer.

LOL, handheld device. Okay dude, since you supposedly know so much about lasers, tell me how you're going to use a 150W CO2 laser with all of its accompanying cooling--and more importantly, focusing--hardware as a handheld device?

And who cares about "worthwhile"? You're right, we have no idea what he'll use this for. But it's not our job to be Cops of The Intarwebs. This "we must protect information from the unknown threats, because we don't know what the threat could be!" is how we get censorship. You might mean well, but your attitude is awful.

Yeah because once again, fueled entirely by assumption, you've come to determine what is the desired use and the appropriately powered laser. Your entire life must be one never ending, unfunny episode of Seinfeld.

Your arrogant schizophrenic replies with fictional quotes from you're own manifestations and irrational conclusions have added no value whatsoever. I provided a name of a company and some cautious advice, nothing more yet you feel the need to go on some crusade - and for what exactly?? Are you a staunch advocate for the use of high powered lasers in uncontrolled, informal circumstances?? Seriously, you ARE the personification of all your overly active insecurities - a know it all who upon reflection knows nearly nothing. Get the chip off your shoulder and realize if you don't like something, then don't engage.

And yes, my handheld spider arctic 3 blue 1W laser is under 2 lbs, can run continuously for 10 minutes and can absolutely BLIND anyone in under a second from miles away.

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