Candle Powered Hot Air Balloon by ewilhelm
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Step 2:

Melt candles together and attach them to balsa. Again, an electric hot knife makes this step a breeze. A heated fork can achieve the same results. Make sure to do both sides.

Once the candles are attached together, melt them to the middle of a piece of balsa wood 3/16 x 1/8 x 36 inches.
 
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palog says: May 30, 2009. 4:24 PM
wouldn't birthday candles just melt really fast
FurtherThanTesla says: Jul 10, 2010. 7:13 PM
thats the point. they burn fast. if you usedd a slower burning candel, it wouldnt generate enough heat to keep its own weight in the air
ilpug says: May 17, 2011. 6:20 PM
you could possibly use some jellied alcohol fuel like William Gurstelle suggests in Backyard Ballistics (only the best book ever)
babybackribs says: Mar 3, 2007. 4:25 PM
hot glue is too heavy, by melting the candles together you dont gain any weight
gn0stik says: Mar 31, 2006. 12:25 PM
Why not hot-glue here?
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