[stephengillie]

These days decapping involves sandpaper and a magnifying glass.

[jacquesm]

Most likely acid. Sandpaper will destroy whatever you are trying to decap if you get close.

[13of40]

Used to be able to burn the package off with a torch and leave the chip somewhat unscathed. I hate to think of the chemicals I was exposing myself to when I did that as a kid, though.