When I was growing up I had a keen interest in the sciences. Mostly because of the cool gear that scientists used, you know, beakers, flasks, Bunsen burners that sort of thing. Well, not only did I not have the money for those sorts of thing but I had no idea where to even buy them if I could. So I had to improvise. One of the better improvisations I was able to do was to hollow out a light bulb and use it for other things. The glass that makes the envelope of the build is quite heat resistant and the screw base is good to attach things to (even better if you can find old ones with brass bases, you can solder to those). I made a number of small boilers in order to learn about steam and distillation. I hope to show people that even if a bulb burns out, it can still be useful.
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First, grip the little solder point and give it a good twist. You will free the brass contact and break one of the wires leading to the filament.
After the insulator has been removed you can see the inside supports of the filament and the fill hole. In the old days bulbs were evacuated of atmosphere to keep the filament from oxidising and burning through. Now days the glass envelope is back filled with an inert gas like argon. The keeps the filament from burning through and makes the bulbs safer.
The fill tube could be saved for a later project if you wish.
The bulb needs a good cleaning. This powder, is called kaolin and is pretty safe. You should still be careful and keep it away from your mouth and anything you might eat near.
There you are, an empty light bulb ready for a new lease on life.
A more traditional use is as a vessel to boil water. I wouldn’t use too hot of a flame, a candle or an alcohol burner should be about as much heat as you should use. It is after all only a light bulb. Real lab ware is much thicker and can take more heat. Still, for the amateur experimenter this can be handy to have.
I hope you have enjoyed this little project and have fun making useful things out of what was once junk.
See more: What Serves As An Emulsifying Agent In The Small Intestine, Bio Chapter 9 Part 2 Flashcards
A few of the dimmer bulbs insist on sending me comments on how this will make great drug paraphernalia. Please keep those comments to yourself as I delete them ASAP. You don’t have to be a rocket scientist to make something into a pipe and that’s not why I wrote this tutorial. Thanks.
(May 6, 2007)
Another useful that can be made with a used light bulb (more)
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