From the course: Additive Manufacturing: Optimizing 3D Prints (2019)

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Retraction settings: Basics

Retraction settings: Basics

From the course: Additive Manufacturing: Optimizing 3D Prints (2019)

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Retraction settings: Basics

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- [Narrator] When you're using a 3D printer, sometimes you want to stop extruding and create multiple islands within a layer with open spaces between. There's pressure in the printer's nozzle that can cause plastic to continue to leak out, though, even when you stop extruding. To reduce this oozing, the printer can pull back on the filament to relieve pressure in the hot zone. This is called retraction. If you retract too little, you'll get stringing, which is what you see here. If you retract too much, you may have filament jams. In this video, we'll talk about what the retraction settings mean. If you're not having stringing issues, it's usually best to leave retraction settings at your manufacturer's defaults. Many of the issues we talk about in this video will not be visible in simulated print in slicing software. One of the challenges is that the reality of the print may be a little different than what is on the…

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