The 'Beta' is a new design from FoamToAir intended for those pilots that can fly indoor schedules without crashing. The Beta is a step up from a full-depron model which makes the model much lighter, but also a but more fragile. The light weight however gives a lower flying speed, so more time to think and correct if you make a mistake.
The Beta is delivered as CNC DepronAero milled parts, the slots for the carbon re-enforcements are already cut which saves a lot of time building and gives a clean look.
Carbon strip 1.5x0.13mm is used to keep parts straight and flat. Carbon rod 0.5mm is used to strengthen the open structure.
Then the mylar is glued on
From that moment on, the build is like a normal Depron build.
The model in the video is the first build and the weight is 75grams.
The production version will have less depron, thinner carbon and with carefull components selection and clean build, a weigt of 65-70 gram should be possible.
Some more pictures: