Have heard of this before... Might be handy to know, if you have a bike/car thats thats old and been sitting in a shed for ages that  needs some work  ....

 

http://www.liveleak.com/view?i=ba2_1475277076

 

i have 2 rusty nuts

 

Just watch yourself with this procedure ,,, dont get the lighter to close to those rusty old nuts of yours ,, or you will be singing the song of Jerry Lee Lewis ,,, "Great Balls of Fire" ...

If it works that's great to know.