I'm in a very peculiar situation and I need chemistry to help me. Thing is I'm a total uneducated guy in that field.

I am looking for help to create or acquire some kind of acid solution capable of melting hard plastic, possibly copper, rubber. Some kind of extremely powerful solution that will assblast a wide variety of materials.

I had a chemist buddy who once made thermit in his garden, but our paths got split. Something like that could maybe work.

Any help or first step where I can oriente myself? I don't need a lot of it, just enought to pierce through like 15-30cm of stuff, with air pockets.