My printer (well, PrusaSlicer) always starts with a line around the object I am printing. See (1) in the image. –Why? What does that do?

There is also this line (2) at the front of the bed. –Why? What does that do?

  • charles@poptalk.scrubbles.tech
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    1 year ago

    In addition to what is mentioned by others, it starts the flow going to get a smooth pressure in the nozzle. While heating up the bed/nozzle, there can be an inconsistent melt in the nozzle. Sometimes a bit will ooze out and leave the nozzle empty. The purge will even all that stuff out and get fresh filament in there before it starts actually printing