I designed this propellers guard structure for my iFlight Turbobee 99r

The aim was to replace the original prop guards that have endured a lot but in the end they succumbed to the repetited collisions.
So while waiting for the replacement arriving from china, I designed this frame

Initially I printed a lot of frames in PETG but, at the end, it turned out to be more fragile than I thought

So I experimented Grafylon3D brand Filoalfa and the impact resistance results were surprising

I add two stl files : the first one is the simplest and the lightest (14 gram equal to the four original guards), the second one has seats for the original RX antenna covers a small tail for the VTX antenna and a reinforced section on the front guards