A Vortex Generator for the Flite Test 3D scratch-build plane
If you're scratch building a FT 3D then transferring the plans to foam board can be time-consuming. These are the vortex generators that are mounted above and below the wings of the FT 3D to provide some boundary layer control.
15 of these printed in glow-in-the-dark PLA weighed about 3 grams.
OpenSCAD source is included.