[1] The fact that rotors cannot only pump but also usable as decorative objects shows this photo. For this candleholder I used  a sorted out(!) two-stage rotor with size 40, which already got dusty of some years being in the basment, and I led made a suitable high-grade steel baseplate. Here we go! It was rather difficult to find the suitable candles - (nearly) all, which I could buy, had a too large or small diameter and don`t fit into the socket, in which normally the coupling rod sits. Unfortunately I do not recommend for imitation due to the fact of the today’s high-grade steel prices however.