This submission came from smaddox&#x27;s comment on an earlier thread about hydrofluoric acid: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10683134" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=10683134</a><p>Thank you to the editor who massively improved on my submission title. :-)