Tuesday, April 29, 2008

«Laser Drawing»

I did a minor change to the layout, if you've been here before you may have to clear your cache and refresh (or hold Shift and click refresh to do a forced-reload). You'll notice black horizontal lines on both sides of the main blog body.

My dad got a new camera. So for once I finally have a camera at my disposal that allows me to do long exposure times. So, naturally, I get out my green super laser and draw stuff on the wall with it. I got my laser from Wicked Lasers (Yes, that's a referral link. If you buy something using my referral I get a percentage in store credit.)

Marf written with a laser
It's very simple to do:

  1. Set up a camera on a tripod in a dim room, facing a blank wall.
  2. Set the camera for a very long exposure (or bulb exposure).
  3. Start taking the picture, and during the exposure time write stuff on the blank wall with the laser.
  4. ???
  5. Profit!

The only downside is you can't see what you're writing as you're writing it. Since it's a blank wall, you don't even have a point of reference. So anything you draw looks like a little kid's drawing.

Stick figure drawn with a laser
G-head with long nose drawn with a laser
That last one is an example of what I use to draw as a kid. It's the capital letter "G" turned into a head with a long nose... and nose hair.

And no Monique, these are not worthy of Doodle Page...


  1. Aww maan.

    How fun !

    I can't wait to try it out. Marf, your little stick guy seems to be - ok nevermind.....

  2. I get to play tonight !!!

    Mine is red though, you still get the specialness status because you get to have green....

    Mine was not mega-bucks though, only $30.00. Big B is thrilled and we can't wait to play, but first he has to mow the lawn...

  3. Green lasers appear 60 times brighter than red lasers of the same power. This is because the human eye is more sensitive to green light.

    My laser is not only green, but the output power is higher as well. So it's not just special because it's green, it's special because it's green AND powerful.

  4. Yeah, I meant to ask. What are doing w/ your laser that you need it to be powerful enough to cut plastic,light matches or burn holes in stuff ?

    After playing a bit, I am even more impressed by your stick figure guy. We tried and tried but always screwed up the facial features, finally settling on a cyclops creature.

    You are the green dude of specialality. New word, just made that up, you can use it if you like - L.

  5. Like I said, it's not easy when you can't see what you're drawing and you have no point of reference.

    To do most of the burning stuff, I need a magnifying glass to focus the beam. Why so powerful? It's the "cool" factor of it.

    But it does make it a little more dangerous. Your regular 5mw lasers gives enough time (1/4 of a second) for your blink reflex to prevent eye damage. Mine does not, so I have to be careful with it. I believe it could do permanent eye damage in as little as 1/1200th of a second; with a direct beam in the eye...

  6. Yeah but you have nose hair in the right spot... How ? I duhno... It was difficult, I'll show you what we did later today...

    The "burning stuff" would be cool to do, but yeah w/ young kids around, it makes no sense to have something that dangerous.


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