Wanted to add that temperature is a huge factor here. That 10 to 15 minute flash time assumes 70 degrees and 50% humidity. In a hot, dry shop, it can be much shorter, and in a cold, damp one, it needs to be longer. The crew might have been following a rule of thumb that failed them because the conditions changed.

Read about a show where the dad is a sentient hot spring. That concept is just BONKERS to me, like how does that even work for school paperwork. Some of these setups are so wild they wrap back around to being kind of funny.

Honestly I used to think progress was worth it, but seeing stuff like this makes me question that.