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How To Turn a Mini Maglite Into a Laser

Lucas123 writes "Using the laser from a DVD burner, this instructional video shows you how to create a hand-held laser that is powerful enough to light a match and pop a balloon. There's some soldering involved and the Maglite's bulb housing needs to be drilled out to fit the new laser diode, but with some basic skill, most people could do this. Just plain cool." Update: 07/09 12:23 GMT by KD : Warning, the device that results from following these instructions will blind you if you look into it.

69 of 605 comments (clear)

  1. Sounds like fun. by jshriverWVU · · Score: 2, Funny

    Know what I'm doing this weekend :) now if only this could be modified for Laser tag

    1. Re:Sounds like fun. by heinousjay · · Score: 5, Funny

      Just tape balloons to people in strategic spots, I guess.

      --
      Slashdot - where whining about luck is the new way to make the world you want.
    2. Re:Sounds like fun. by aerthling · · Score: 2, Funny

      Or: last one to go blind wins.

    3. Re:Sounds like fun. by Ohreally_factor · · Score: 2, Funny

      Go blind? You masturbate while you're playing laser tag? More like laser fag! =)

      Actually, I was thinking that I can finally get laser eye surgery now, and ditch these glasses. I just need a really fast switch to pulse the laser and a mirror to see what I'm doing and I'm good to go. Plus, I'll be saving like $2000+ dollars.

      --
      It's not offtopic, dumbass. It's orthogonal.
  2. Re:Uhhh... by Curien · · Score: 5, Funny

    Yes, thank you for repeating the article summary.

    --
    It's always a long day... 86400 doesn't fit into a short.
  3. Great... by sRev · · Score: 5, Funny

    Now when I go to the movies, instead of worrying about Brad Pitt having a red dot on his face, I have to worry about the screen igniting. Good times.

    1. Re:Great... by RuBLed · · Score: 3, Funny

      You know they're gonna solve that before we have kids.


      At /. it's like saying "You've got a better chance winning the lottery though..."
  4. Careful with this thing. by Anonymous Coward · · Score: 5, Funny

    In the words of Rainier Wolfcastle:

    My eyes! The goggles do nothing!

  5. yeah baby by sudo · · Score: 4, Funny

    So where did I put those frikin sharks?

  6. Shark by wizardguy · · Score: 4, Funny

    Ok, so where do I get the shark ? and where is the manual on how to mount it on the shark ?

    1. Re:Shark by Vombatus · · Score: 4, Funny
      and where is the manual on how to mount it on the shark ?

      Mounting the laser could be a slight problem if the shark is conscious

      --
      This sig is intentionally blank
    2. Re:Shark by Pogdranaut · · Score: 5, Funny

      and where is the manual on how to mount it on the shark ? mount -t lamniformesh /dev/laser shark
    3. Re:Shark by NeuroManson · · Score: 4, Funny

      Ew! Ick! TMI man, TMI.

      --
      Just because you can mod me down, doesn't mean you're right. Shoes for industry!
    4. Re:Shark by zebs · · Score: 3, Funny

      Turning the shark upside down could be a slight problem if the shark in conscious

    5. Re:Shark by _pruegel_ · · Score: 5, Funny

      Just turn the shark upside down before turning it upside down, that makes it go into tonic immobility for about 20 minutes.

    6. Re:Shark by harry666t · · Score: 3, Funny

      hmm...

      $ file /dev/laser /dev/laser: symbolic link to '/dev/dvdrw1'

  7. To repeat an old warning by stox · · Score: 5, Funny

    "Do not look into Laser with remaining eye!"

    --
    "To those who are overly cautious, everything is impossible. "
  8. This is why I read Slashdot by olyar · · Score: 5, Funny
    Windows bashing? Witty comments? Duped stories? Comments about duped stories and how often they get posted? Soviet Russia and Overlord jokes? Left-leaning political commentary?

    Nope. None of those things.

    Articles about making lasers? Yes! Yes! It can light things on fire too?

    Excuse me. I think I may have just wet my pants.

    --
    Custom, hands-free Linux installs. Instalinux
    1. Re:This is why I read Slashdot by Lane.exe · · Score: 5, Funny

      I for one welcome our laser-wielding Soviet Russian overlords with a Beowulf cluster of goggles that do nothing against Natalie Portman covered in hot grits making the first post on a duped story about the Cowboy Neal option for polls.

      --
      IAALS.
    2. Re:This is why I read Slashdot by Opportunist · · Score: 4, Funny

      overlords running Linux on a Beowulf cluster...

      At least be complete, you insensitive clod.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    3. Re:This is why I read Slashdot by CDarklock · · Score: 2, Funny

      What else would you be running on a Beowulf cluster? OSX?

      --
      Microsoft cheerleader, blue flag waving, you got a problem with that?
  9. Re:Laser Housing by djupedal · · Score: 2, Funny

    "Is that necessary? Is it just a metal tube or does it serve a more substantial purpose."

    Yes.

    Now do you understand why they don't allow optical media writers in your carry-ons?

    Next week...how to turn a laser into a repeating rifle - all part of our DIY Firearms Convergence Series, here on the 'Defending the Homefront' Channel. Brought to you by 'Ahmed's Security Stuff' - at ASS, we pick up on the first ring!

  10. Re:Uhhh... by feepness · · Score: 3, Funny

    How funny, I was reading this post and happened to see this at exactly the same time:

    "Bureaucrat Conrad, you are technically correct. The best kind of correct."

  11. Obligatory Star Wars by Anonymous Coward · · Score: 1, Funny

    I feel a great disturbance in the internets. Like a thousand LG drives cried out in pain and were suddenly silenced. ...

    Join the dark side, hack your mini-mag. Seriously sweet.

  12. Good plan by xrayspx · · Score: 3, Funny

    There's going to be a lot of blind hackers in the next couple of weeks. If you're smart, you'll figure out how to wrangle this as workmans comp before you build the thing.

  13. Re:This makes me sad. by Architect_sasyr · · Score: 2, Funny

    I for one welcome our new mag-lite-bearing-sith-overlords... you jedi scum can leave... these aren't the lasers your looking for...

    Hey look... I just butchered a movie script...

    --
    Me failed English...
    FreeBSD over Linux. If my comments seem odd, this may explain...
  14. Young Skywalker by infonography · · Score: 5, Funny

    I see you have constructed a new lightsaber. Your skills are complete, indeed you are powerful as the emperor has foreseen. - Darth Vader

    --
    Sorry about the writing. Robot fingers, you know? Cliff Steele in DOOM PATROL #23
  15. Soddering? by Trogre · · Score: 2, Funny

    Is that a strange way of pronouncing 'soldering'?

    --
    "Nine times out of ten, starting a fire is not the best way to solve the problem." - my wife
    1. Re:Soddering? by Anonymous Coward · · Score: 2, Funny

      Is that a strange way of pronouncing 'soldering'? Maybe it's what you get if you combine an electronics class with the Goatse guy.
    2. Re:Soddering? by billgates · · Score: 4, Funny

      It's an American thing. The rest of the English speaking world uses 'soldering'.

  16. Re:This makes me sad. by Gordonjcp · · Score: 2, Funny

    You can get green lasers very cheaply on eBay. Oddly enough I was looking for one last night, and spotted some for less than £15 GB (or about $150 US).

  17. BluRay by VariableGHz · · Score: 5, Funny

    Think of (all?) the people who now have a good use for their BluRay players. ;P

  18. Re:Uhhh... by loganrapp · · Score: 4, Funny

    Yeah, but now you can put it on sharks!

  19. Re:Uhhh... by spootle · · Score: 2, Funny

    At least they're not moving it into a fleshlight case

  20. Re:Um, *excuse* me!? by Ohreally_factor · · Score: 5, Funny

    You're not the boss of me. I hate you! I hate you! God, my family sucks.

    Oh, sorry. I was channeling a 14 year old emo girl for a minute.

    --
    It's not offtopic, dumbass. It's orthogonal.
  21. MY EYES! by Aqua+OS+X · · Score: 4, Funny

    MY EYES! The googles do nothing!

    --
    "Things are more moderner than before- bigger, and yet smaller- it's computers-- San Dimas High School football RULES!"
  22. Umm, this isn't a toy.. by wamerocity · · Score: 3, Funny
    It's a personal Protective device. I, for one, plan on keeping this handy or even making it find a home in a smaller case that can run on button cells (if only for a few seconds) purely as a protective device.

    Pepper spray? My balls! Nothing to teach an assailant a lesson like losing vision in one eye.

    actually the one thing I am VERY interested in is if can produce enough pinpoint heat to start a flammable liquid on fire from a distance...oh.. I think I just came.

    --
    "Thank you for using Stop-n-Drop, America's favorite suicide booth since 2008"
  23. Re:Sure by Alioth · · Score: 2, Funny

    I don't know about the orange or blue diodes, haven't really looked at them.


    Please remember not to look at them with your remaining eye :-)
  24. Re:Sure by Opportunist · · Score: 1, Funny

    It's all fun and game 'til someone loses an eye.

    Then it gets awesome.

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  25. Re:Dangerous by somersault · · Score: 5, Funny

    Pfft, it's "just plain cool" - ain't no way it can be unsafe!

    Next week on /. - how to convert your BB gun to fire 9mm rounds!

    --
    which is totally what she said
  26. Re:Uhhh... by tsajeff · · Score: 2, Funny

    Now it makes sense. Maglite cases are waterproof - I always wondered how a laser would yield a warm meal for a shark or mutant sea bass.

  27. Re:Dangerous by PopeRatzo · · Score: 5, Funny

    this foreign doctor explains to my collegues that she needs to inject a needle in behind the back of my eye.

    She takes out her book of english and says slowly "This will..... hurt".
    Thank you for giving me tonight's horrible nightmare.

    If I wet the bed, I'm sending you the laundry bill.
    --
    You are welcome on my lawn.
  28. Re:This is cool, but can it... by Anonymous Coward · · Score: 1, Funny

    Hello. My name is 'Hank'. I am ordinary American boy. I have question please. How many of these does it take to bring down aircraft? Please answer soon. I must know before I go to daily prayers. Please reply to: "Hank American Boy". Also please supply quotes for 1000 DVD drives and 2000 batteries. Ready to pay in dinar. Ooops. I mean dollar. Hahaha. I make funny. Dollar. Not dinar.

  29. Re:This is cool, but can it... by MrNaz · · Score: 2, Funny

    Hello Hank. DVD players and batteries can be purchased more cheaply and discretely in volume from China. Please direct your questions there. You will also find that China's energy policies make it easier to pay in dinar if you wish. You will also find that America is about to put DVDs on the restricted export list along with PS2s and common encryption.

    If you are caught taking a portable DVD player across a national border you will be arrested and tried as a terrorist. It is unclear whether this will apply to CD players as well, but better throw that out too, just to be on the safe side. BlueRay players have been classified as WMDs, so if you're a foreign government, you better stay friendly with the US if you want to watch The Matrix in high definition without being declared a rogue state and invaded.

    Yours truly,
    John.

    --
    I hate printers.
  30. Meanwhile, back at the White House, a plan develop by MasterOfGoingFaster · · Score: 5, Funny

    Bush: We've go to do something to get rid of all those dangerous hackers.

    Vader: Perhaps we could post a video showing them how to make a dangerous weapon that they would accidentally use on themselves.

    Jobs: Hmmm... there's a dangerous laser in DVD burners.

    Gates: Yeah, let's hope that works better than your plan to make them all deaf with your stupid iPod, or get them run over walking across the street, playing with their iPhone.

    --
    Place nail here >+
  31. Re:Dangerous by JonathanR · · Score: 3, Funny

    Oh yeah? How much does it cost to hang the sheets out on the line to dry?

  32. Re:Nice timing by bentcd · · Score: 2, Funny

    (you all know what quote just begs to be in the reply, right?) No, no, no, it's not begging the reply, it's raising the reply, and . . . wait . . . ummm . . .
    --
    sigs are hazardous to your health
  33. Re:Dangerous by Himring · · Score: 4, Funny

    The editors cannot change the article as they have killed themselves with their new maglite lasers....

    --
    "All great things are simple & expressed in a single word: freedom, justice, honor, duty, mercy, hope." --Churchill
  34. having trouble seeing by Anonymous Coward · · Score: 1, Funny

    Is anyone else having trouble seeing after watching the video?

  35. Re:Sure by jon_anderson_ca · · Score: 2, Funny

    Do not meddle in the affairs of lasers, for you are soft and absorptive.

  36. Re:Dangerous by kotj.mf · · Score: 5, Funny

    This is a very dangerous toy

    IT WILL BLIND YOU IMMEDIATELY IF:

    - You look at it
    - You shine it on a reflective surface that shines it back into your eye

    Pussy.

    I've got one sitting right here on my desk, and I can shine it in to my eyes with absolutely no problems. Allow me to demonstrate...

    Srr?

    Sbao;utelu ni orpbkens,

    --
    hang brain.
  37. Re:Dangerous by jahudabudy · · Score: 5, Funny

    Your idea of cleaning piss stains off of sheets is hanging the sheets out to dry? I think you misunderstood what your mom meant when she said she liked having crisp sheets on the bed.

    --
    ...sometimes, in order to hurt someone very badly, you have to tell that person terrible lies. - PA
  38. Re:Dangerous by morgan_greywolf · · Score: 5, Funny

    No problem. He just need to wait until a reply gets modded up +5 Informative. That's a sure way to guarantee that anything posted on Slashdot will be accurate, with correct precision, and not be filled with crackpot theories, right?

  39. Re:Dangerous by EddyPearson · · Score: 2, Funny

    You're blatantly a bus driver aren't you... Taunted and traumatized by Kids on your bus. Blinded with their home made laser beams. Made bitter by the Police's unwillingness to help. You're a perfect candidate for vigilanteism. Drive a Taxi instead...

    --
    You feel sleepy. Close your eyes. The opinions stated above are yours. You cannot imagine why you ever felt otherwise.
  40. Re:Dangerous by skeeto · · Score: 5, Funny

    This is a very dangerous toy

    IT WILL BLIND YOU IMMEDIATELY

    Humbug! All my life they have been telling me masturbation does the same exact thing.

  41. Re:Dangerous by RealGrouchy · · Score: 5, Funny

    It will probably be uploaded on Youtube and a lot of innocent, curious kids will end up with one fewer eye as a result of this video. Yes, but on the bright side the eye patches will help identify the willing-to-do-anything children at a distance, and we need more pirates anyway.

    - RG>
    --
    Hey pal, this isn't a pleasantforest, so don't waste my time with pleasantries!
  42. Re:Dangerous by Cpt_Kirks · · Score: 4, Funny

    Actually, if the little turds use one of these modified pointers, you can easily find and pound their asses.

    Jacking up the power like this make the ENTIRE BEAM visible, not just the point.

    I still want a laser powerful enough to deface bumper stickers and write insults into the paint on cars...

  43. Re:Dangerous by Ihlosi · · Score: 4, Funny
    Jacking up the power like this make the ENTIRE BEAM visible, not just the point.

    Visible means little when you're blind.

  44. Re:Dangerous by NDPTAL85 · · Score: 2, Funny

    Why is seeking revenge counter to improving society in your mind?

    Sure revenge has gotten a bad rap but I do believe it could be done right if it was redesigned.

    --
    Mac OS X and Windows XP working side by side to fight back the night.
  45. Re:Dangerous by d0rp · · Score: 3, Funny

    special goggles can be obtained for specific wavelengths, which will ensure that you cannot see the laser - and hence it can't hurt you Of course if don't get the right wavelengths...

    My eyes! The goggles, they do nothing!

  46. MOMMY! by ColdWetDog · · Score: 2, Funny
    The mods are smoking crack in the morning again!

    informative?

    Funny, mayhaps. But informative? No.

    God have mercy on their heathen souls.

    --
    Faster! Faster! Faster would be better!
    1. Re:MOMMY! by E++99 · · Score: 3, Funny

      It's important to be made aware of the mind control tactics used by our government. The only problem I've had with them is that I'm not sure if the contact lenses work or not.

      That's why you should just stick with tin foil. Everyone knows that works. Believe me, if the government mind control was working on me, I'd know about it! But I have to go now -- I like to get my quarterly estimated income taxes paid nice and early.
  47. Re:Dangerous by sumdumass · · Score: 3, Funny

    All you have to do is watch it through a fish tank. If a beam comes back at you, it would just difuse or refract in the watter. There is a bonus if it hits the fish.

  48. Re:Dangerous by Wolfrider · · Score: 2, Funny

    [ Oblig ] " The goggles, they do nothing! "
    :b

    --
    .
    == WolfriderV6 == I'm willing to admit that *I just might* be wrong... Are you??
  49. Why use a BB gun? by wsanders · · Score: 2, Funny

    Just hit 'em with a hammer!

    SAFETY WARNING: Don't hit bullets with hammers!!

    SECOND SAFETY WARNING: Because hitting a bullet with a hammer can cause it to explode!!

    THIRD SAFETY WARNING: A bullet moves very fast and can kill or injure anything in its path!!!

    FOURTH SAFETY WARNING: YOU COULD EVEN YOUR EYE OUT DOING THIS!

    --
    Give a man a fish and you have fed him for today. Teach a man to fish, and he'll say "WHERE'S MY FISH, YOU IDIOT?"
    1. Re:Why use a BB gun? by HTH+NE1 · · Score: 3, Funny

      FOURTH SAFETY WARNING: YOU COULD EVEN YOUR EYE OUT DOING THIS!
      So it's a cure for being crosseyed? Someone get Navin R. Johnson on the phone!
      --
      Oh, say does that Star-Spangled Banner entwine / The myrtle of Venus with Bacchus's vine?
  50. Re:Dangerous by thc69 · · Score: 2, Funny

    Hmm...we could even come up with a catchy way to say it...maybe...

    "An eye for an eye."

    --
    Procrastination -- because good things come to those who wait.
  51. Re:Dangerous by Anonymous Coward · · Score: 1, Funny

    Permanent blindness is going to hurt you far more than missing out on revenge on lowlife scum.

    Personally, I find it rather difficult to miss out on revenge whilst peering through a 10x scope. But that's just me, I suppose.

  52. Warning. by Ungrounded+Lightning · · Score: 3, Funny

    Visible means little when you're blind.

    Warning: Do not look into LASER with remaining eye.

    --
    Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way