if you're really careful, an angle grinder will do it. if you want absolute control (and want to develop your dominant arm), you can use a file, but it'll take a while. a dremel might also work: i'd go angle grinder for the majority of the bits and use a file to finish it off.
if you're really careful, an angle grinder will do it. if you want absolute control (and want to develop your dominant arm), you can use a file, but it'll take a while. a dremel might also work: i'd go angle grinder for the majority of the bits and use a file to finish it off.