UPDATE 4: tests with kf airfoil wing very successful, can fly longer, faster and stable without fluttering

UPDATE 3: test video of glider 1: https://youtube.com/shorts/DSoBWi8LOhU

UPDATE 2: the first version's wing can be stiffened with tape, this also creates an airfoil, this solves the fluttering at high speed, if it still flutters, add more tape along the leading edge!!

UPDATE 1: added KF airfoil version (glider 1.1.stl) for the main wing to stiffen it up and stop it from fluttering

adjust flight attitude with the elevator (bend at the cutouts)

CG will be at 20% of MAC for 100% infill

for a stronger wing use a large number of perimeters

LW PLA would be better for this model but I don't have that filament