This functionality allows users to temporarily halt a 3D print job and later continue it from the point of interruption. This can be achieved through a pre-defined set of commands, often triggered by a button press or other external signal. For example, a command sequence might instruct the printer to retract the filament, move the print head to a safe position, and disable heaters. Resumption would involve reversing these steps and continuing the print from the paused layer.
The ability to interrupt and restart printing offers significant advantages. It allows for filament changes mid-print, nozzle cleaning, or addressing unexpected print issues without discarding the entire print. This capability reduces material waste and saves time, especially for lengthy prints. While not a new concept in 3D printing, its implementation within Klipper offers flexibility and control due to Klipper’s nature as firmware. Its evolution reflects the growing demand for efficient and robust print management within the 3D printing community.