title_body: It is possible to completely dissolve coffee grounds while cleaning a metal filter?
upvoted_answer: I'm not a chemist, but I'm confident that you won't be able to dissolve coffee dust using conventional cleaning methods. I think the chemical solutions you describe are primarily aimed at dissolving oily residue.
  If fine grounds are stuck in the filter, I'd try to remove them mechanically. In this case, I think air pressure from a compressor could push them out.