How do those colour-changing glass marijuana pipes work?

Question

How do they change colour? Is it some kind of chemical reaction with the smoke or does heat make the glass change colour?

Answer 1

Don't do drugs.

Answer 2

pieces of metal (usually silver and/or gold) are held in the flame of the torch until vaporized (often called 'fuming'). The glass is rotated in this vapor stream until a fine layer of the vaporized metal is visible on the surface of the glass. After this, clear glass is applied (often in 'dots' and 'lines') to 'encase' the vaporized metal in between layers of glass. There are many techniques and methods of applying the fumes and clear glass making a myriad of different colors, and endless types of patterns that one can come up with. The colors produced with fumed metals are best when they are translucent, vibrant, and reflective. As the pipe darkens with use, the colors (many barely visible) become darker and much more conspicuous, thus causing the appearance of 'color change' (the glass doesn't really change colors though).

Answer 3

Wow, we were just asking each other this question and there it was, in a few keystrokes.

Cool.

Answer 4

Well, if you're not interested in drugs then I'm not going to yell at you, but I mean why should you care how a marijuana pipe works if you're not going to use it. If you are, I highly suggest you don't. It may not seem like a good enough reason coming from a complete stranger, but drugs are one thing you do not want to get mixed up with.

Answer 5

Mjws kakkwm  wkffkkj jfhwieip qsad lslq  qk odf klqak qmccolf  and then kqoomnf  wkonm kol masoqn with klmasd sqwn ekcs!

Answer 6

idk haha im cheap and use water bottles.

Answer 7

i think it's just the resin that accumulates inside the pipe and makes the color change.