why line at start?

[unkempt horizon]

AI Help

The line at the start of a 3D printing process, known as a "priming line," is used by the 3D printer to ensure that the filament is flowing smoothly and consistently before starting the actual print. This helps prevent any gaps or inconsistencies in the print caused by insufficient filament flow at the beginning of the print.

WARNING: This response is AI generated and may contain errors.

[worldly owl]

1: it also helps purge out any old filament colors if you swapped,

and 2: That's because it's a machine and can't determine that by itself, it's up to you to see if there's issues and intervene