Home-made lava lamp [updated for the last time]

 by Dzwiedziu

Step 7: [Update] Few days later...

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As you see some white particles precipitated (this is the right word? :P) from the water-paint solution. And in a cold enviroment they don't want to mix. So this could be either annoying or a unplanned visual effect.

Also making bigger bubles is hard for a cold bottle.
 
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-KungPow- says: Mar 7, 2010. 9:23 PM
 do you have to keep adding alka seltzer?
Dzwiedziu (author) in reply to -KungPow-Mar 9, 2010. 10:37 PM
I you want to keep it going, then yes. But at some point the mixture will become saturated with with the tablet's remains. A this point I don't know if it will work any more.
-KungPow- in reply to DzwiedziuMar 9, 2010. 11:28 PM
 aww thats too bad... does anyone know how to build a lava lamp that stays going by itself?
rcovas in reply to -KungPow-Oct 17, 2010. 12:17 AM
there's also another way with benzilic alcohol, and salty water (4.8 % of salt), with tis method you must use the bulb under the bottle otherwise it doesen´t work YOU CAN SEE THE RESULTS HERE: http://www.youtube.com/watch?v=aQEvSLmi0tk&feature=related
rcovas in reply to -KungPow-Oct 17, 2010. 12:08 AM
Yes, http://www.youtube.com/watch?v=3u6JE3TKBg4 and http://www.youtube.com/watch?v=SZbMmH-y8hY&feature=related made with mineral oil, alcohol 70%, alcohol 95%, oil based coloring, and trementin
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