After the collision of the RC model of a car with a solar lamp, it was necessary to make a new clutch. This is a simple model that was printed in about one hour. It consists of two parts, which must be glued with medium second adhesive after printing. All walls are 2 mm thick and the coupling is strong enough for the purpose.
i3-MK3, PLA 3,4m, https://www.filament-pm.cz/filament-1-75-pla-bila-1-kg/p61, layer 0,2mm, print speed 100%, filling 30%