minstarmin
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A tip to those making Mg/KNO3 powder
Hello ScienceMadness,
This is my first real post here, so I hope I'm putting this in the right section. Anyways, a week or so ago, I ordered up some Mg atomized powder from
pyrochemsource. Mixing it in a 5g:5g ratio, I put a bit in a pile with the fuse sticking out the side (fuse straight out the top of a pile of ANY
explosive can cause premature detonation) and when it burned down, all I saw was a flash with some sparks. I kept trying this, in different ratios,
all with very similar results and no real explosion. However, while trying to develop a good way to float the powder on my pool (don't ask why) I
discovered that putting it in a bottle would cause it to explode. This worked for all the ratios I had tried before that had failed to properly
explode on their own. I suppose the pressure inside the bottle makes it explode? By the way, I ran a thin fuse through the cap of the bottle with a
hole drilled so the fuse would fit tightly. Maybe if you just run the fuse through the open mouth of the bottle, it would create more of a rocket
effect? Sorry for the long post, just wanted to leave a few tips for those wanting to create different effects with this mixture. Have fun and be
careful.
Aden
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violet sin
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With a little bit of confinement, ~0.5g of each will make a decent noise. 2" square of paper wadded up with the powder in center, fuse sticking out.
I thought it was going to go woosh... It did not. Last time I played with that kind of composition( before I registered here, so been a while).
Neighbors, heat, low humidity here.. just better not.
Miles and miles of dry grass/star thistle = I like my freedom and $ right where they are.
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DubaiAmateurRocketry
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Quote: Originally posted by minstarmin  | | By the way, I ran a thin fuse through the cap of the bottle with a hole drilled so the fuse would fit tightly. Maybe if you just run the fuse through
the open mouth of the bottle, it would create more of a rocket effect? Aden |
Depending on how finely grinded/mixed your mixture is, usually its unlikely to create more of a rocket effect, for a plastic water bottle, would just
blow up. Take care.
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Bert
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Thread Moved
13-6-2016 at 17:20 |
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