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Backyard Ballistics This forum is dedicated to the safe teaching and responsible handling of high and low explosives. You will not find any information on how to make "bombs" or any such device(s) . Backyard ballistics will teach you the science and the art of pyrotechnics and how to manufacture and use explosives/pyrotechnics safely and responsibly. Backyard ballistics is also a haven for rocketry and pneumatic cannons. All information contained within this forum is for educational purposes ONLY. Totse does not accept responsiblity for any incident involving the use of the information contained within this forum.

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 #1 
Old 2008-10-29, 01:55
Regular
 
8th layer of hell
Default I need a project....

Looking for something fun to do this weekend, anyone got any ideas?
Preferably I would like to make an incendiary that burns for a long time (10 min) in a liquid form. But any other ideas, unless they are ridiculous, would be appreciated.
 #2 
Old 2008-10-29, 09:09
asilentbob asilentbob is offline
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Default Re: I need a project....

Methanol (or ethanol) + boric acid (or CuCl2) = green flames... Simple and fun, just don't do it inside or huff the fumes.

Or brew some beer?
 #3 
Old 2008-10-29, 13:44
miceo miceo is offline
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Default Re: I need a project....

Brewing beer should be fun.
Have trid making some homemade alcohol, the first batch tasted funny and bas bearly drinkable, but got you drunk. the second batch failed to produce alcohol because it was in a too cold place :(
 #4 
Old 2008-10-29, 15:23
Moderator
 
directly over the center of th
Default Re: I need a project....

make a batch of anfo / 100 mesh magnalium and place 500 grams of this under a bag of flour
 #5 
Old 2008-10-29, 20:06
Regular
 
Connecticut.
Default Re: I need a project....

Rocketry? Sugar rockets look like a hell of a lot of fun, but I've never tried making one.
 #6 
Old 2008-10-29, 22:00
MH-iforgotmypassword MH-iforgotmypassword is offline
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Default Re: I need a project....

Quote:
Originally Posted by warweed12
make a batch of anfo / 100 mesh magnalium and place 500 grams of this under a bag of flour


Does this really work? My only attempt to produce a fireball using a HE ended in failure.

APAN under a cup of MEK, surface of mek lit on fire, electrically ignited via a bottlerocket+nichrome affair. Then again, anFO would probably have been a better choice, and some high temp sparky metals couldn't have hurt.


SO RLY?
 #7 
Old 2008-10-29, 22:53
Regular
 
8th layer of hell
Default Re: I need a project....

How much of the magnalium for each 100g of ANFO. This sounds cool but doing it on a smaller scale would be easier for me.
 #8 
Old 2008-10-30, 07:53
Moderator
 
directly over the center of th
Default Re: I need a project....

if and i mean IF i remember correct i used magnalium flake from a lathe in a shop i worked in and i think i used like 10% by weight in the ANFO but i was just kinda eye balling nothing scientific to back it up ... i used a HDPE container i got back from the days of dupont chemicals and i think and i can't remember that i used a APAN cap it was fused with like 20 inchs of 1/8 inch visco and put in a small previous crater hole with like a 10 kg bag of flour on top .... regardless it yeilded a very violent dust explostion and i could not give you a estimate on how much was burnt but from what i could tell it was quite a large amount of the flour ....

perhaps somthing along the lines of bulker coffee creamers with higher fat content would propigate flame better i dunno

but it certainly is a project.. run with it and publish your results ...

apan appn MEKPPN MEKPAN w/e is easyist hell even flash and somthing ... the point is simply to disperse and ignite the fuel such as flour.... in my experiance it worked quite well and was much like i was expecting but with kinda a twist

make sure and make videos .. and not to try in small amounts that really are good for nothing lol at least 100g's of HE and a half kilo of flour
 #9 
Old 2008-10-31, 01:18
Regular
 
8th layer of hell
Default Re: I need a project....

Flash would be considerably easier for me than making ANFO or APAN, don't really have the sources for it. Adding black powder to the mixture would help the explosive power but igniting the flour... well I'll have to mess around with this one for a while. Nonetheless it's a good project.

What kind of flour did you use? Wheat has more organic materials and white comes in unbleached and bleached, i don't think it makes a difference. The sack, itself could be soaked in gasoline, kerosene or a diesel fuel to accelerate the burning. Many ideas to work with.

Filming it will be less than average. my camera is an old one with video but doesn't have sound at all.
 #10 
Old 2008-11-01, 04:20
MH-iforgotmypassword MH-iforgotmypassword is offline
Regular
 
Default Re: I need a project....

Quote:
Originally Posted by InspiredByMe
Flash would be considerably easier for me than making ANFO or APAN, don't really have the sources for it. Adding black powder to the mixture would help the explosive power but igniting the flour... well I'll have to mess around with this one for a while. Nonetheless it's a good project.

What kind of flour did you use? Wheat has more organic materials and white comes in unbleached and bleached, i don't think it makes a difference. The sack, itself could be soaked in gasoline, kerosene or a diesel fuel to accelerate the burning. Many ideas to work with.

Filming it will be less than average. my camera is an old one with video but doesn't have sound at all.


You can find acetone, hydrogen peroxide, a catalyst, and cold packs, I guarantee you. Adding black powder won't help your flash powder. That'd be like adding aluminum cans to your campfire. They may burn, but they aren't speeding anything along. Adding extra AL flake, preferably larger would help insure flame propigation. I don't think the variant of flower will change anything (but by all means experiment) and soaking the sack sounds like an accident waiting to happen + would probably clump your powder, which would ideally be distributed finely and uniformly in the air - aka not clumpy.
 #11 
Old 2008-11-25, 10:18
Regular
 
Edmonton
Default Re: I need a project....

Quote:
Originally Posted by miceo
Brewing beer should be fun.
Have trid making some homemade alcohol, the first batch tasted funny and bas bearly drinkable, but got you drunk. the second batch failed to produce alcohol because it was in a too cold place :(


learn some grammar cunt
 #12 
Old 2008-11-25, 15:35
Moderator
 
I live in Heresy
Default Re: I need a project....

learn some grammar cunt

Does bad Grammar make you sic?
 #13 
Old 2008-12-03, 00:40
Regular
 
atl ga
Default Re: I need a project....

The sack, itself could be soaked in gasoline, kerosene or a diesel fuel to accelerate the burning. Many ideas to work with.



wouldnt the gasoline cause the flour to clump and not get enough oxygen? i think any flames would be purely from the gasoline, not a true dust explosion.
you could end up with flaming clumps of flour, which could be cool i suppose
 #14 
Old 2008-12-04, 00:02
Regular
 
8th layer of hell
Default Re: I need a project....

soaking as in soaking it for a day or two then drying it out over time, i have found a much easier dust explosion device though
 #15 
Old 2008-12-05, 03:44
MH-iforgotmypassword MH-iforgotmypassword is offline
Regular
 
Default Re: I need a project....

Quote:
Originally Posted by InspiredByMe
soaking as in soaking it for a day or two then drying it out over time, i have found a much easier dust explosion device though


but all the fun compounds in gasoline are volatile.... That'd be like pouring vodka in a bottle, letting it evap, and then trying to use it as a molotov...
 #16 
Old 2008-12-05, 18:43
Regular
 
8th layer of hell
Default Re: I need a project....

but all the fun compounds in gasoline are volatile.... That'd be like pouring vodka in a bottle, letting it evap, and then trying to use it as a molotov...

yeah but instead of soaking i could just dust it with some 325 mesh Al
 #17 
Old 2008-12-06, 05:12
MH-iforgotmypassword MH-iforgotmypassword is offline
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Default Re: I need a project....

yeah but instead of soaking i could just dust it with some 325 mesh Al
That sounds like a better plan! I expect pics (Please).
 #18 
Old 2008-12-06, 23:32
Regular
 
8th layer of hell
Default Re: I need a project....

Well thats gonna be a while, until i get a camera thats decent

I think im gonna use a chlorate/FO mix instead of flash
 
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