I saw a story online about a painter who found a client using a space heater to dry paint, and it all cracked. From what I've heard, folks often use stuff like hairdryers or fans, not knowing it can ruin the setup time. Another case was someone using a vacuum on wet stain, which just smeared it everywhere. It's a common issue because people want to help, but glues and paints need the right conditions to set. Best to wait it out or check with the person doing the job first.