The key concept of kinematic coupling is "Exact Constraint", which means ONLY six degrees of freedom are restrained when a kinematic coupling is applied between two rigid bodies. Due to this advantage, designing with kinematic coupling is deterministic. Every time the kinematic coupling is taken apart and reassembled, it will remain the same relative orientation. 

Therefore, I designed this wireless charging station with kinematic coupling, aiming to keep the wireless transmitter and receiver co-centered every time it is reassembled, in order to maximize the power transmission efficiency. 

The kinematic coupling, which is the wooden part of the design, is fabricated with drilling, band saw, V-groove jigging, sanding and gluing. The holding s for the transmitter and receiver are 3D-printed.