1/8 THICK WINGLETS PREFERED MATERIAL WOULD BE ABS!
I've kept winglet geometry to spec (identical to factory shape only thinner) all edges are rounded for smooth airflow.
NOTE!!! THIS IS DRAWN IN INCH FORMAT.... YOU MAY NEED CONVERT SIZE IN YOUR SLICER. SIMPLIFY 3D IS WHAT I USE IT DOES THIS AUTOMATICALLY
pla has been fine for strength. 2 top and bottom layers with 20% infill is just fine!