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
The author marked this model as their own original creation.