This is a 3D printed fixed wing that I bought the STL files from here: https://craycle.com/product/fpvorca-stl/
I must admit, these STL files are amazing and worth every penny. Plus, the info they provide to print is very detailed, especially if you use Cura too. At first, I started with regular PLA+ filament then I learned about LW PLA and switched over to that. Until if fly it, I would not know if one is better than the other, but in terms of the weight there is a 30% weight reduction with the LW PLA.