free nichrome wire

[A-BOMB]

Go here for 10 feet of free nichrome wire in 36 gauge. At the top of the screen is a link that saids free nichrome wire. You just need to enter your e-mail and mailing address and name lie on the name part.

www.ssaerospace.com (http://www.ssaerospace.com)


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live by the bomb
die by the bomb

[CodeMason]

Woah! A two dollar value!!!

Just get it at hobby stores.

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Visit my website (in development): http://codemason.cjb.net

[A-BOMB]

I just want to tell every one since I don't have any hobby shop around were I live that sell it, so it might be good for people that can't get it easily. So get some its free!

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live by the bomb
die by the bomb

[EventHorizon]

Free usually comes with a price, which looks like upto 3 months wait time.

www.mcmaster.com (http://www.mcmaster.com) sells it, but its $42 for a 1/4# spool (~3200')http://theforum.virtualave.net/ubb/smilies/frown.gif. I'm thinking of purchasing a spool and Ebaying 20' lengths or something.

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"Chance favors a prepared mind" - Louis Pasteur
"Happiness is a large pile of links." - Me
PGP ID 0x147CEF54

[A_W]

My lokal hobby shop do not sell nichrome wire, so I just ordered some (free) from Ssaerospace. Do you think they`ll send it to Norway :confused: ? If not I`ll sue them :mad: !

[Bignutsami]

nope i dont reckon they do...

"Note: offer only open to US shipping addresses. Promotional gifts are shipped quarterly which may result in an elapsed time of up to 3 months between subimssion and fulfillment."

[nbk2000]

I ordered a sample of nichrome wire back in december. It's now practically april and still no "free" sample. They probably just do this to collect e-mail addresses for resale to spammers.

I've been getting a lot of spam in the last few months. Wonder why? :mad:

[RTC]

Perhaps the k3wl'z that don't like you have signed you up for that xxx mail service?

[DBSP]

I just rip the nichrome out of an old hairdryer, that's cheap. :p

[A-BOMB]

I got mine in january but still free is free.

[Kdogg]

Ordered some months ago, still hasnt come.

[BoB-]

There is several feet of Nichrome in toasters, I just keep my eyes open at yardsales.

[nbk2000]

Speak of the devil....I just got mine a few minutes ago.

I almost lost it too. I open up the letter and read where it says "enclosed is your wire" and I'm looking through the envelope and don't see shit. I'm thinking the idiots didn't include it.

Then I backtrack my path from the mailbox and there's this TINY little piece of cardboard with the wire wrapped around it. It's about the size of my thumbnail.

If I had taken my usual path through the field, I'd never had found it. So be careful when opening yours.

I just tested it by touching a 1/2" length to the posts of a 9v battery. The wire turned incandescent white instantly and melted into nothingness.

If you use a half inch for each igniter, you've got more than a hundreds worth for free.

:D

Just start finding empty houses and sending off for "samples" to them. That should keep you in good supply.

They also offer $20 off their DIY rocket motor kit because of the "sample". Go to <a href="http://www.ssaerospace.com/specialoffer.php" target="_blank">www.ssaerospace.com/specialoffer.php</a> and use the special offer code: 14735. Ends May 1, 2002

[PYRO500]

I just got mine too, cool stuff, it's thin enough to explode immediately with my cap discharge blasting maching (100J) I may try a few in paralell

[nbk2000]

Shit!

I was going to try my hand at making some igniters, but now I can't find that little piece of cardboard they sent me.

:mad:

And it'll probably be ages before I trip over it while cleaning or something, considering how cluttered my place is.

Anyways, what I was going to do is take a 1/8" coil, dip it in NC slurry, building up several layers, and try firing that. I was also going to try melted KNO3/Sugar.

Anyone else make ignitors?

[Mr Cool]

I normally use fuse, but if I want an electrical cap I just use about 0.5" of fuse wire or thin copper or any other thin wire I can find, with each end soldered onto bits of thicker, insulated wire about 4" long.
That's it. I don't bother with any pyrotechnic on the wire, with a car battery it gets easily hot enough to set off the BP primer in the cap.
But if you coat it with a good layer of NC, you won't have to worry about short circuits or anything if the loop gets squished closed.

PYRO500: What voltage is that blasting machine running at? If it's high enough for a spark to jump a few mm from it, then I think the spark alone will set off most HE's. I was reading a patent on NTO, and it said that had a spark sensitivity of around 9J, RDX is considerably more sensitive and PETN is more sensitive still...

[electric emu]

My friend ordered some chemicals from ssa about 2 months ago and never recieved them, i heard they forget about your orders sometimes. I orderes the wire and got it too but it took a few months.

[nbk2000]

I found the wire a little while ago, so I tried making an igniter and it worked.

I made a small loop of the nichrome connected to solid core copper wire. I then dipped this loop in NC lacquer and let it dry. I repeated this several times to build up a layer of NC on the coil.

I then sprinkled KNO3/Sugar powder (50/50 volume) on the still wet NC and let dry. I then dipped it again in NC to coat it. After it dried, I touched it to a 9v battery and it flared up quite nicely with a little blob of molten whatever on the end.

:D

Oh happy days! <img border="0" title="" alt="[Wink]" src="wink.gif" />

I wonder, if you had a disposable camera flash cap attached to the wire, would it vaporize the wire? Or just get it hot? Because if it will vaporize it, than that opens the way for exploding bridge wire detonators.

[Zambosan]

NBK: It would probably *not* vaporize the wire. Electrolytics in cameras can get a pretty decent voltage on them, but can't hold enough charge to provide enough energy to vaporize a wire. To do that, you need more capacitance. Most "exploding wire" setups use several large bulk capacitors rated for high voltages, with one leg attached to an end of the wire, and the other leg going to a spark gap (that leads to the wire). The charging circuit pumps charge across the caps until the voltage reaches the breakdown point of the gap, at which point the air ionizes, resistance suddenly drops, and the energy rushes into the newly-formed near-short circuit. The sudden impulse of current causes a rapid rise in temperature from resistive heating, and the wire literally boils into super-hot plasma.

[BoB-]

I have to disagree Zambosan, if the Nickel Chromium was cut thin enough it would most surely vaporize like steel wool, I have actually caused a single strand of copper wire to burst about 1/4" of its length using a single disposable camera circuit.

Plan B: buy a bag of "number 3" coarse steel wool, there are about a million strands on each roll, I've had the same 2 rolls of steel wool in my house for several years now.

[nbk2000]

It may be possible to use a variable resistor to adjust the voltage from a battery to a coil of the nichrome wire so that it's red/white hot, without getting so hot that it melts.

The reason for this would be to make a reuseable ignitor for a pocket dragon.

I've also just remembered about those wind up cars and toy pistols that shoot out sparks. That may also work if the sparks are hot enough to ignite ether.

[kvitekrist]

hello.

I get my nicrome wire from something that looks like steel woll.

it's used for cleansing potatoes.

5cm of it will glow for many hours on 14v

[DBSP]

Do you mean pot scrubbers?

[kvitekrist]

no, this wire is difrent.. more flat.. looks like waste from a milling mashine

and it says potato scrubber on the package

[DBSP]

The wires in my scrubbers are flat and about 1-1,5mm wide. It might be the same thing only with a different name.

[kvitekrist]

sounds like the same thing.. they are spring shaped right? I Use to hold them straight and warm the wire with an lighter to straighten it out..

sorry for my bad english

[RTC]

A picture would be more descriptive.[sp?]

[Zambosan]

If you're talking about the wire melting or burning from resistive heating, sure. NBK wondered whether the wire would explode. This only happens if you have enough power to dump enough current into it in a short amount of time to instantaneously boil the metal into a plasma. That produces a pretty decent shockwave; if you've ever heard a high-voltage Buss fuse blow, you've got the idea... it'll make your ears ring, and there's probably a potential application there as a primary shockwave for detonation. Steel wool burns (to iron (III) oxide, I *think*), which is what you get when you run a little current through it from a battery... the wire is not vaporizing, merely oxidizing.

[PYRO500]

My blasting machine is 100J when I totally (actually overcharging) charge my caaps to around 100V, there are 12 electrolytics in an old breifcase style laptop case with a light switch and a set of speaker terminals, when I discharge this across a 1.5 inch length of nichrome it instantly melts and shoots off blobs of molten nichrome (one burned my arm) I have 2 capacitors totaling in 2 KJ combined that would be awsome as detonator caps but they take a long time and alot of power to charge and are not easy to trigger, there is such a thing as a capacitor discharge detonator, in fact I believe some airbag systems initiate their HE charge (lead szide right?) with a small square of aluminum foil that a capacitor discharges across and sets off the HE. I have herd of similar systems used in the precise timing of the main HE charge in nuclear weapons to get that nanosecond timing they need.

[jolly roger]

yeah but what is nikrome wire, and why would i want any.

ah whatever send me sum if u want though.......

[Polverone]

Sodium azide is used in airbags, not lead azide. It's mixed with other components to take care of the metallic sodium generated by the azide's decomposition.

[Pu239 Stuchtiger]

Those other ingredients in air-bag grade NaN3 are iron oxide and silicon dioxide. These obviously can easily be removed, by simply dissolving as much of the air-bag grade NaN3 as possible in water, filtering, and evaporating off the filtered solution. Just a fact that I feel I should share (I'm not sure how well known this is, this might help out newbies who are just lurking)... azides are comparable to cyanides in toxicity.

[nbk2000]

Unless the water is extremely pure (and maybe not even then) the sodium azide will decompose, forming hydrogen azide gas, which is VERY TOXIC! On par with hydrogen cyanide.

Oh, and any flames will cause it to explode with great force as well. Not something you want to toy with.

Of interest may be some newer airbag designs which use HMX. :)

See the patent list in the "Knowledge" section to read it. 15% HMX content. Will the fun never end?