| Author | Message | ||
     Anonymous |
You should post Thermite. | ||
| Simon Quellen Field (Sfield) |
I don't think so. It hardly seems like a toy to me. Do you think a teacher would welcome it as a science fair project? | ||
| Anonymous |
"- Get a DC convertor like the one used on a train set. Cut the connector off, seperate the wires, and strip them both. - Now you need a jar of water with a tablespoon or so of sodium chloride (which is SALT!) added to it. This makes the water conductive. - Now insert both wires into the mixture (I am assuming you plugged the convertor in...) and let them sit for five minutes. One of them will start bubbling more than the other. This is the POSITIVE(+) wire. If you do not do this test right, the final product will be the opposite (chemically) of rust, which is RUST ACID. You have no use for this here (although it IS useful!). - Anyway, put the nail tied to the positive wire into the jar. Now put the negative wire in the other end. Now let it sit overnight and in the morning scrape the rust off of the nail & repeat until you got a bunch of rust on the bottom of the glass. Be generous with your rust collection. If you are going through the trouble of making thermite, you might as well make a lot, right? - Now remove the excess water and pour the crusty solution onto a cookie sheet. Dry it in the sun for a few hours, or inside overnight. It should be an orange-brown color (although I have seen it in many different colors! Sometimes the color gets fucked up, what can I say... but it is still iron oxide!) - Crush the rust into a fine powder and heat it in a cast-iron pot until it is red. Now mix the pure iron oxide with pure alluminum filinos which can be bought or filed down by hand from an aluminum tube or bar. The ratio or iron oxide to aluminum is 8 grams to 3 grams. - Congrats! You have just made THERMITE! Now, to light it... - Thermite requires a LOT of heat (more than a blow torch!) to ignite. However, a magnesium ribbon (which is sorta hard to find.. call around) will do the trick. It takes the heat from the burning magnesium to light the thermite. - Now when you see your victim's car, pour a fifty-cent sized pile onto his hood, stick the ribbon in it, and light the ribbon with the blow torch. Now chuckle as you watch it burn through the hood, the block, the axle, and the pavement. BE CAREFUL! The ideal mixtures can vaporize CARBON STEEL! Another idea is to use thermite to get into pay phone cash boxes. HAVE FUN!!" Cookbook | ||
| marat Unregistered guest |
are you crazy? | ||
| krs (Atomico) New member Username: Atomico Post Number: 3 Registered: 8-2006 |
can you also ignite thermite with a fresnel lens? becouse it can melt steel | ||
| david (Knifinghobo) New member Username: Knifinghobo Post Number: 1 Registered: 8-2006 |
thermite is a mixture of 75% rust and 25% aluminium. It needs to be mixed together and must be ignited with magnesium ribbon or someting which is just as hot (it needs to be white hot to ignite the thermite. The thermite will be able to burn red hot and still not ignite. To make the thermite better you can add barium nitrit and sulphur (70% thermite, 29% barium nitrit and 1% sulphur. If you use Iron(III) instead of Iron(II) it produces a larger amount of energy than iron(II). You can also buy thermite under the name thermit and it is used for welding. | ||
| Matthew Floerke (Byudog) New member Username: Byudog Post Number: 1 Registered: 8-2006 |
Nice posts guys. This is something to try out sometime. It definitely isn't a toy though. I was reading how some people thought thermite was used in the 9/11, to bring the towers down--controlled and carefully. There is video of some orange stuff coming out of the side of one of the towers, I think. Is an airplane hot enough to melt steel or an exploded one? Maybe not. Also, if it was--why didn't the tower topple over to the side and just go straight down, like how it looks in a controlled bombing detonation/demolition? I'm also not sure of all the technical applications of thermite in industry, other than welding or whatever you need it for to melt something... | ||
| I. Dimov (Overrider) Advanced Member Username: Overrider Post Number: 86 Registered: 12-2005 |
the planes being aluminium and the steel used in the building might have caused the proces. Also thermite isn't the only thing burning with an orange flame. | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 1430 Registered: 12-2004 |
Don't be silly guys. A plane full of fuel can easily cause a fire that will weaken steel enough to allow the concrete floors to pancake. And when that happens, all the energy is vertical -- down. So it just goes straight down. The entire weight of the upper floors is accellerating downwards at 9.8 meters per second per second, and the building is built as cheaply as possible, so it cannot withstand that kind of force. There is no thermite needed, and none used. The aluminum probably burned, and certainly melted. | ||
| I. Dimov (Overrider) Advanced Member Username: Overrider Post Number: 88 Registered: 12-2005 |
Exactly. Steel might melt at over 1000 C, but it's strenght is halved at 600 C. This is pure thermodynamics. (Specific burning heat, Specific thermal capacity, melting points etc., etc.) |
