Build: I would like to separate my metal shed, like how separatet the piece of metal?

well-known metal shed shed chicken: DragonDad question : I would like to separate my metal shed, like how the piece of metal separatet I have a quiet old metal shed, and would like to replace with a new model (wood + vinyl), but the difficulty is that this metal is poured out not only connect by metal nail, but a place exactly where you use some kind of metal glue that binds very strongly. My query is that this stuff should I acquire, to dissolve the metal adhesive, and if it really is not

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