The do retract only when crossing borders is the flag which indicates that only crossing perimeter travels will have retracts before them. Choose that mode to speed up print process. Plastic that running from nozzle on travels will be all inside a part, so it will not be visible. If you want to do retract before all travels you should uncheck this flag.
Category: Aura
Avoid crossing borders
The avoid crossing borders flag is the flag which indicates that border crossing minimization mode in on. It means that if it is possible to travel from one print area to another without crossing borders, that path will be chosen instead of direct path with borders crossing . This mode increases print time, but improves external surface quality.
Horizontal X/Y distance from model (mm)
The horizontal X/Y distance from model is the offset from a part to supports. Set this parameter to a part has no fusion with supports.
Fill angle (°)
The fill angle is the angle of infill rotation.
Fill pattern
Fill pattern. You could choose from three patterns: lines, grid or triangles, depending on your preferences.
Fill density (%)
The fill density percent is the percent of filled space inside the support.
Max unsupported overhang angle (°)
The max unsopported overhang angle up to which part overhang has no need to be supported. If angle is more than the unsupported angle then supports will be generated. The angle is regarding to vertical axe.
Bottom airgap thin layers count
The bottom airgap thin layers count is the number of layers between the bottom of a support and the top of a part. Choose a value with which support will be easy to tear from a part and support will not fall down because of large distance to a part.
Top airgap thin layers count
The top airgap thin layers count is the number of layers between the top of a support and the bottom of a part. Choose a value with which support will be easy to tear from a part and supported areas will not fall down because of large distance to a support.
Make airgaps
The make airgaps flag is the flag which indicates that air gaps will be generated onto and/or under supports.