DJI Mavic Mini recovery buoy
Description
This recovery float is intended for easy recovery after a fall into the water. The Mavic Mini will be irreparably damaged, but whoever is covered by disaster insurance will be able (maybe) to return it to receive the replacement: It is therefore suitable for those who takes off into the open sea from a boat. **It must be aware that this addition exceeds the limit of 250 grams, so in many countries the drone must be registered.** The best material to make this print is polypropylene, for its very low density (0.9) and for the excellent interlayer adhesion, which make it definitely waterproof. With rectilinear infill at 5% and two perimeters the weight should be around 31 grams. Its volume is around 0.2 liters, the result is a positive boost in fresh water of about 170 grams, which should ensure its floating. The conditional is a must, because, for obvious reasons, I cannot perform a real test. I therefore do not take responsibility and **if you decide to use it for a recovery after a fall in the water, you do it under your responsibility knowing that floating is not guaranteed.** There is an even lighter material, the FormFutura Pegasus Ultra Light PP filament, density 0.75, with which you can go down to 23 grams. Because this material is softer, I advice to increase to 3 perimeters the compression area subject by zip ties. The buoy is conveniently fixed with two zip ties, but to further reduce weight, it would be better to use a technical lacing tape, of the type used in the aerospace industry. This is what I often use instead of zip ties: http://www.breydenproducts.com/products/aerospace/polyester-tape-a-a-52081 I keep the work in progress flag until I have the certainty that the float is able to support the drone on the surface and also until I have the certainty that the flight is not compromised. [EDIT 06/29/2020] mavic_mini_buoy_V2_fixed.stl added. It is shortened by 2.8mm to improve the opening of the battery compartment.
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