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How to obtain fine Al Powder and Ferrous Oxide

Discussion in 'General Survival and Preparedness' started by CBMS, Mar 25, 2008.

  1. CBMS

    CBMS Looking for a safe place

    Hey I cant seem to remember what their uses are outside the usual fire startiing one.
    I know the ferrous oxide is used to tint cement. and aluminum is for painting. but what part of painting is it used for?
  2. Seacowboys

    Seacowboys Senior Member Founding Member

    Ebay is the easiest way. Thermite is perfectly legal.
  3. mdl66

    mdl66 Monkey++

    Thermit is used as a heat source for cutting and welding,Thermite reactions are used as a incendiary in devices that are not so legal.Its also used to purify Uranium.
  4. CBMS

    CBMS Looking for a safe place

    Okay. SO I'll bite, Whats the compositional difference between the two?
  5. Seacowboys

    Seacowboys Senior Member Founding Member

    Thermite is an eight to three ration by weight of fe03 (iron oxide) and powdered aluminum and there is nothing illegal about it unless you are constructing an incendiary device and even then, may not be illegal, depending on the purpose of the device. You can also mix plaster of paris and a little water to mold the thermite into shapes. It will also ignite and burn underwater. Thermit welding uses thermite, the composition didn't change, only the name of the process. Rail Roads have been using thermit welding for rails for many years. The by-product of burning thermite, is iron (from the oxide).
  6. CBMS

    CBMS Looking for a safe place

    Okay, So If I am using Thermite to cut through rocks in the ground (Landscaping, seriously!) Its legal and that Plastered Sounds like a good plan. Now I can get the Ferrous Oxide (natural) from a local cement company I worked for last summer, but I dont know how to explain the local paint company what I want the Al powder for, Their competitors asked me and I didnt know what to say. So I just said I'd have to call them back with my boss's response.
    What should I say, as they probably wont sell it to a 21yo guy who wants to use it to cut through rocks in his backyard. And no I dont want to use a Hammer and chisel.

    Any hints?
  7. ghrit

    ghrit Ambulatory anachronism Administrator Founding Member

    Thermit (or a similar mix of materials) is also widely used for electrical grounding and continuity connections on cast iron and steel pipe that is in buried service. Also frequently used for ground grid connections on structures at or below grade. So far as I know, the pronunciation of both is the same (or at least one is usually mis pronounced.) The commercial product is "Cadweld" which comes in premeasured containers sized for the connections to be made. (I think Cadweld also has some copper in it, judging from the color of the finished connections.)
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