Fillets are a challenge in OpenSCAD and not natively supported. This customizer provides a generation tool and modules for the most common fillets that can be programatically added or imported into a design with minimal processing overhead.
Fillets can be generated as follows:
Standard functions:
Internal functions (not normally modified, but can be modified to change fillet shape etc.)
There are more advanced fillet libraries and functions available, however, sometimes you just need a basic fillet with a low computational overhead that can be applied quickly and easily to selected objects :)