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Now, my friends, if you have not experienced Thermite, you have a treat awaiting you.
From our pals at Wiki:
Thermite (/'???rma?t/) is a pyrotechnic composition of metal powder, which serves as fuel, and metal oxide. When ignited by heat, thermite undergoes an exothermic reduction-oxidation (redox) reaction.
They go on ...
Thermite reactions have many uses. Thermite is not an explosive; instead it operates by exposing a very small area to extremely high temperatures. Intense heat focused on a small spot can be used to cut through metal or weld metal components together both by melting metal from the components, and by injecting molten metal from the thermite reaction itself.
Thermite may be used for repair by the welding in-place of thick steel sections such as locomotive axle-frames where the repair can take place without removing the part from its installed location.
So you see, that locomotive axle that your wife has been after you to fix can finally be repaired!!
We sell a kit that consists of premeasured amounts of Iron Oxide and Aluminum Powder as well as a quantity of Magnesium Ribbon to be used as a fuse. You can mix smaller amounts but just observe the proportions. Also ... you need to get upwards of 3,000 degrees to ignite it, forget cannon fuse.
Here is a neat compilation of videos to give you a flavor of the possibilities ...
Just be careful, this stuff burns HOT!!