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.
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.
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http://www.youtube.com/watch?v=fWHFu7uJnpU
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.
you just copied it from styropyro! (if your not him)