As you can see when your angle increases to 45 degrees,
each layer has much less surface area to adhere to as you print.
This is where support comes in handy. It provides that underlying
structure for those layers to build upon.
As the angle increases, the underlying surface area for
each layer becomes smaller and smaller until there's simply not
enough surface for the next layer to adhere to. In these
instances, support material is practically a requirement if you want
your part to print at all.
Infill Angle
adjusts the angle at which the support structure is built.
Interface Layers
allows you to specify solid layers interspersed with the support
material. This comes in handy when using multiple extruders. For example, if you're printing a
part in PLA with lots of support, you can generate all the support with PLA, and then have 5 or 6
interface layers of PVA (a water soluble filament). The print would then only be in contact with
the PVA interface layers and it would be a flat layer to print on. When finished you can dissolve
away the interface layers and the rest of the support falls off the part cleanly.
44
45 Deg. Infill
