After designing my original rubber band plane, it flew far but it wasted a bit much filament. I wanted a model that was easy to print and flew super far. This design is meant to accomplish that. It is fast to print and can shoot with a rubber band slingshot extremely far. Here are some settings so your print doesn't fail.
Setting:
0.2mm layer hight
15% gyroid infill
Supports: Off
Brim: doesn't matter