lol totally off topic but this reminds me of a funny story… I was taking this class where they asked us to pretty much ‘make’ our own printed circuit board. These days its all done through automated cam machines, but back in the good ol 50s and 60s it was done by hand so for fun we were revisiting that.
For etching, we had to use ferric chloride (a bucket full). I was doing this at 3am at night without my parents knowing about it. In the process I tipped the entire bucket on the floor! There was ferric chloride all over, and it turned RED! This stuff stains pretty bad too! At that time, there I was with this blood like red stuff all over my clothes, my hands and the FLOOR! Now we had nice marble tiles on the floor and my first priority was to clean this mess up without my parents knowing about it. While I was doing it, my dog kept watching me (from a distance) and then started barking. My mom came down and at first when she saw me, at first she was scared as hell! She didnt know what I was up to and thought I murdered someone, and was now trying to get rid of the blood! haha