Redditor FlounderLegitimate's macro thermal camera has captured some fascinating footage of a print in progress. The hot end dips in and out of focus like a star, while the trail of freshly extruded plastic gradually fades. Areas with full infill concentrate the heat, glowing for longer.

It's a satisfying watch: one to file alongside other things we've covered over the years like macro photography of prints and printer parts, and telescopic nozzle cams. Is there a function or purpose to recording a print like this? No. Could I watch it on a loop for a long time? Yes.