and that the purge tower is clean along the margins. That means the "poop chute" and nozzle cleaner are doing what they are designed for, which is unusual for a lot of these Bambu Lab clones.

"Purge towers" (or "prime towers" in Bambu's parlance) allow for multicolor printing by providing a place for the filament remaining in a nozzle to be extracted and prevent bleed-over between colors.

Bambu Lab, one of the fastest-growing manufacturers of consumer-grade 3D printers, is facing two patent infringement lawsuits ...