The support base and support interface can use a different type of filament than the one used for the rest of the model. By default, if no specific filament is specified, the printer will use the same filament as the one used for the current layer, thereby minimizing the time needed for changing filaments.
This refers to the filament used for printing the support or raft base.
When there is a significant amount of support, you may choose a relatively inexpensive filament for printing the support base (as long as it can print properly and in a multi-color printing scenario) to reduce costs.
For complex models with many details, where automatic supports need to be close to the support surface and there is a lot of support to achieve high surface quality, the supports can be difficult to remove after printing. In such cases, you might choose specialized filaments that are easy to remove, such as soluble materials or alkali-soluble materials.
This refers to the filament used for printing the support surface of the support or raft layer.
For models with high surface quality requirements, you can choose specialized filaments that are easy to remove for printing the support surface, such as soluble materials or alkali-soluble materials. This way, even if the Z distance between the support surface and the model surface is set to 0, the supports can be easily removed, resulting in a high-quality surface finish.