Re: Thermite ignition mixture
- From: TONY S <kclo42112@xxxxxxxxx>
- Date: Fri, 28 Mar 2008 07:36:18 -0700 (PDT)
On Mar 27, 11:40 pm, Bob1001 <quadrunner...@xxxxxxxxxxx> wrote:
On Mar 27, 10:49 pm, LadyKate <ladyk...@xxxxxxxxxxxxxxxxxxxx> wrote:
On Mar 27, 8:40 pm, doityourselfpyrotechn...@xxxxxxxxx wrote:
I have seen many Thermite ignition posts on here and only one way that
actually talks about how to light it. i am looking for a nice, easy to
make mixture that works at least 90% of the time.
i am just starting my pyro life so something not to complex would be
nice,
You could use a fuse called Microfuse, It is somewhat new, and the
formula originated from MircoTek. It actually uses potassium
permanganate, and although it may not seem safe, the silicon in the
binder is so inert that it prevents auto ignition. I have even soaked
it in glycerin for 2 days, with not even a bubble. Surprising, but its
for the most part very stable. It ignites thermite with no problem,
and easily burns about 400 + degress hotter than most visco fuses, so
its good for igniting very stubborn compositions such as thermite, but
it should never take the place of visco in actual fireworks. I would
still never trust the stability of the fuse enough for that, also just
in case, I always store mine in a metal military surplus can, very far
away from anything flamable. Belwo is the formula, and some words from
the inventor:
Micro-Fuse
Recipe
Potassium Permanganate 5 Parts by weight
Sulfur -Parts by weight 1 Part by weight
Silicon Caulking 1 Part by weight
Mix 5 grams of powdered KMnO4, 1 gram of sulfur and 1 gram of silicon
gel ( the substance that is used to glue the glass-panes in aquariums
together ).
I suggest mixing the sulfur and KMnO4 first to insure a sufficiently
uniform mix.
Knead this mixture well, and then roll it out with a board so that you
end up with a cord of about 4 mm thickness.
Let it cure overnight and then cut it up into suitable lengths.
The final step is to wrap it in electricians tape (preferably
lengthwise; that is perpendicularly to the normal wrap-up vector); two
wrappings are sufficient with the type of tape that I use.
Now for the specs:
Burn rate: ca 30 sec per 3 cm
Flexibility: A 3 cm piece will bend more than 180 degrees with no
damage to the core, though some types of tape may not.
Water Resistance: Core does not soak at all and will survive any
amount of rain or submersion. With the described wrappings, fuse will
burn submerged.
A variation can be made by using 8.5 g KMnO4 and 2 g silicon gel. This
will give a less mechanically stable product, but will burn at a rate
of ca 40 sec per 3 cm and will produce less smoke. Water resistance is
similar.''
I step prime some fuse with nc slurry[smokeless dissolved in
acetone]black powder .nc and flash,or thermite
a couple coats on the tip of a six inch piece works great, tying a
knot at the end before priming provides added flame too!!!!!
.
- References:
- Thermite ignition mixture
- From: doityourselfpyrotechnics
- Re: Thermite ignition mixture
- From: LadyKate
- Re: Thermite ignition mixture
- From: Bob1001
- Thermite ignition mixture
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