Introduction: Laser From Dead Computer

Picture of Laser From Dead Computer
Here’s another neat way to make use of that old computer that has been lying around your house: Turn it into a red burning laser using parts salvaged from the dead computer. The burning laser is powerful enough for you to wear safety goggles.

The components you need to salvage are: the power supply, DVD Burner (16x speed or more), and the heatsink. The DVD Burner provides the laser diode which is housed in the heatsink proofing. The PSU and the right wires are connected to the heatsink and the laser module. That’s it! The heatsink helps to run the laser long enough to burn through things like plastic and ignite matches.

Step 1: Key Points

Picture of Key Points

Sorry they're out of order.

Step 2: Credits

I give all credit for this idea to YouTube user styropyro . Please support him however you can. He has great ideas. Here is a link to his YouTube page  <>


max stripe (author)2014-07-29

wut would happen if the laser touched ur skin?

mondeluz (author)2011-10-09

can someone tell me what these powerful lasers are for?

Ravirar (author)mondeluz2013-10-23

These lasers can sometimes be used as weapons if you have enough power. See
The are also fun to put in a laser gun prop so that it actually works to cut paper or something to show your friends. They are pretty awesome lasers.

pokemech (author)2013-03-24

I almost can't wait for my computer to die now... its got WAY higher than 16x. >:)

lstaničić (author)2011-08-23

is a plastic lens going to melt?

slaserj (author)lstaničić2012-02-02

The plastic lens will not melt because the plastic is clear. The lens will not absorb the light and therefore will not melt. The same is true for white materials and other light colors. These lasers will only burn dark colored objects because they absorb the light. If anyone wands to explain this in more "scientific" detail, please do.

rahul7878 (author)lstaničić2011-09-22

i trying to makin lader nut not workin plz help

k_m4n (author)lstaničić2011-08-24

i think so becous in the video you see it burn plastic and tape

atlas n pbody (author)2012-01-07

are axis mods requerd

Davidt95 (author)2011-12-05

hey could u light a firework fuse with that laser

werdna223 (author)2011-11-21

does anybody know if a 5mW diode now can be turned into this( limited through resistor power so not full power 5mW

werdna223 (author)2011-11-21

no you cant use a Magnavox, i tried and forund it has a wrong diode it is more advanced

svens55 (author)2011-11-17

is a aixiz a lens or not ?

fjr. (author)2011-07-23

can you use the Magnavox DVD player

rahul7878 (author)fjr.2011-09-22

i trying to makin lader nut not workin plz help

neung.n80 (author)2011-08-05


sniper shot (author)2011-06-20

wow,its a lot like the thermal discouragement beam from portal 2

mondeluz (author)2011-06-06

a better way how to get laser diode from dvd burner

Damondog (author)2011-04-06

Can you use a cd burner instead of a dvd?

Wolfhunter9154 (author)Damondog2011-04-23

A cd burner will only have a weak Infrared diode, so no.

An IR laser will be useful if hooked to a remote or a TV B-Gone. Aim it at the target apartment and you can turn off the TV set from a hundred metres away at least.

In any case, to aim a laser good, within the beam spread, you need a suitable mounting. A good method is a T shape tripod with two pieces of steel with 2 screws on the "horizontal" part of the "T" and a nut (like quarter-20)sandwiched between two T shape metal pieces. The third screw screws into that nut with a washer screwed to make a knob.

This type of mounting makes for a mounting similar to a Civil War cannon. The laser diode serves as the cannon. You aim horizontally then do the knob for the vertical. You can put the dot accurately across a footie field with this type of mounting.

With an IR laser element, you will want a camera to see the dot as you aim it at the window, then you align it to get the signal from a TV B-Gone to fire.

Antikythera (author)2011-04-24

How many mW is this?

drummerboy223 (author)2011-04-13

Hey when you cut the wire connectors, how many green did you have? i ended up with a TON of black and ONE green wire. and im supposed to tie the together? black on green? then the rest of the black on black? im so lost.

Kronikle88 (author)2011-03-29

Im looking into making one of these, what kind of 3ohm resistor did you use?

3zuli (author)2011-03-20

copy'n'paste from styropyro! [flaged]

dombeef (author)3zuli2011-03-25


dog digger (author)2011-03-18

Thats a screenshot. Click on the little 'i' in the top right an look on the page title

kbarbolina (author)2011-03-18

is this even your tutorial?
you just copied it from styropyro! (if your not him)

joeismydad (author)2011-03-17

you copied this from styropyro didnt you

zazenergy (author)2011-03-13

Thanks for sharing this -- would love if you posted the video here when you can!

smashbob (author)2011-03-10

Sorry everybody, some problems with my computer. I'll get around to fixing everything soon.

About This Instructable




Bio: love the outdoors, technology, reading, drawing, and much more.
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