I have tried to make an exact copy of the arm for frame HSKRC freestyle 250 (Realacc Real3/Ummagawd Remix). I don't think this arm is strong enough if 3D printed from any filament. This arm should be cut by CNC machine from carbon fiber.
HSKRC_Freestyle_250_arm_v2.dxf | 544.6KB | |
HSKRC_Freestyle_250_arm_v2.stl | 84.3KB |