Sr:2:RuO:4: is the most disorder-sensitive superconductor known. It has also been a leading candidate for a novel type of quantum computer that would enable calculations to occur over much longer time scales before suffering decoherence than is the case for today’s superconductor-based quantum computers.  Establishing whether Sr:2:RuO:4: is viable for such applications would be aided by the ability to make structures containing superconducting Sr:2:RuO:4: films.