New photo for you all, since I’ve been slacking on posts again. New board game review up tomorrow, so be looking forward to that!
I work in a lab at a chemical company, and the research chemists here make small laboratory batches in round bottomed flasks such as this one. Occasionally their experiment will advance too quickly and gel in the flask, forming a solid mass such as this. Part of doing everything at lab scale first is to prevent a similar reaction happening in the production area, which would require days of work to chisel out by hand.
Failed reactions like this were what kept people from being able to manufacture plastics that weren’t based on natural resins for years, until the plastic known as Bakelite was developed in 1909 as the first synthetic. One series of products the company I work for are modern derivatives of that early work, still being used today.