From the course: Additive Manufacturing: Optimizing 3D Prints (2019)
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Platform adhesion: Rafts, the first layer
From the course: Additive Manufacturing: Optimizing 3D Prints (2019)
Platform adhesion: Rafts, the first layer
- [Instructor] Sometimes a 3D print just will not stick to the print bed, even using basic techniques like a skirt or brim. A more aggressive way to make the print stick to the platform is to make adjustments to the height and extrusion width of the first layer. Or you might need to add another printed layer below your print, called a raft, in difficult cases. Let's show this for our cube. Let's increase the height and extrusion width of the first layer. These settings are in the Quality Grouping in Cura, or you can search on initial layer height. Either way, let's set initial layer height to .4. .4 in this case is 80% of the nozzle diameter. That's about the thickest you ever want a layer to be in practice. We'll also take initial layer line width to 200% or twice as wide. If our normal layer height is .1 millimeter this mean we're pushing out eight times as much plastic as on other layers because we're using four…
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