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Author: Subject: Danger of flash powders and my stupid injury
mech252
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sad.gif posted on 2-3-2019 at 06:56
Danger of flash powders and my stupid injury


English isnt my first language so there can be gramar mistages...

This happened to me at time when i had no experience with flash powders and i underestimated them ...
I was testing some pyrotechnic mixtures. Every time i made 1g of mixture and ignited it directly. I started with fountain conpositions and then moved to flash powders, first i tried some aluminium based flashes and then i wanted to try some magnesium flashes. It was 50/50 magnesium ,barium nitrate mixture and i ignitet is as others directly witch was something i will never do again.
I felt short sting on two of my fingers and i was completly flashblinded. As soon is i could see something i looked at my two fingers and they were covered in white-black layer, so i washed it of. First i thought its just 1th degree burn with small (about 5cm or 0.5 ing wide) 2th degree. Later it turned out to be one big fairly deep 2th degree burn (5 cm or 2 inch long and 3 cm or 1 inch wide). It healed slowly and i still have big well visible red spots...
I never ignite mixtures directly since then and you shouldnt either...


[Edited on 2-3-2019 by mech252]
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MineMan
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[*] posted on 2-3-2019 at 14:27


I have certianly done the same with PP and sodium benzoate. It was on a Kleenex and I lit the Kleenex. Sorry to hear about your accident...

You seem young? I think we have all made mistakes like this, it seems energetic substances always surprise us, even when they should not.
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johnmay
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[*] posted on 3-3-2019 at 00:18


Yeah, every starting pyro kid has to have their hands burnt, thats the way the lessons are learned.
You should try using some kind of lit piece of stick that will give you some distance and you will be fine.
Some kind of good, resistant gloves are handy, like welding class or something.

Learn your lesson and take care.

Regards,
JM.
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sodium_stearate
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[*] posted on 3-3-2019 at 09:00
when a rocket is not a rocket.


I hear ya. My first real lesson about the imminent
dangers that lurk in unexpected, or not well thought out
situations was this story from back when I was
about 14 years old:

A friend and I had been experimenting with various
ways to make small rockets. Match-heads clipped from
wooden matches were one source of fuel we found
that worked somewhat.

We'd had some luck filling small cardboard tubes with
the match heads and then sealing the top and making
a nozzle on the bottom. Attach it to a stick, and it would
go up a short distance kind of like a bottle rocket.

From there, we made the transition to filling small
steel used CO2 cartridges with the match heads.
We'd stick a fuse in the open end, light it, and get back.
The result was that the escaping gas would cause the
cartridge to go zooming off, spinning wildly on some
unpredictable path.

Adding fins to it did not help.

So, one day we got the bright idea of turning it into
a sort of mortar arrangement. The idea was to
take about a 3 foot length of copper pipe and drive it
into the ground. The pipe could be aimed at an angle.
We thought for sure this would guide the cartridge
out in a straight line of flight.

So, one day when we had the pipe in the ground
and we were ready, I did the honors. I lit the fuse
and slipped the cartridge down into the pipe, where it
slid down to the bottom.

We waited a few seconds for the flight of the cartridge
as we expected to see it come launching out of the tube.

We were standing right there.

What did it actually do?

BOOM!!!! It blew the copper pipe wide open
at ground level! Peeled it just like a banana.
The top few feet of pipe went flying several feet away,
and many pieces of sharp copper shrapnel stuck in
nearby trees and in the wooden side of his parent's
garage.

No injuries to us.

But we both stood there dumbfounded and stunned
by what had just happened! Imagine what could have
happened to us if that flying copper and steel had hit us?

By the way, no remains of the cartridge were ever found.

That still stands to this day as lesson #1 in
"always expect the unexpected" :o

[Edited on 3-3-2019 by sodium_stearate]




"Opportunity is missed by most people
because it is dressed in overalls and it
looks like work" T.A. Edison
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