  We present a schlieren system comprised of 3D printed optical mounts, a
sub-$10 mirror, and a smartphone camera. The system is intended to make
schlieren imaging accessible to K-through-12 students, educators, as well as
hobbyists. In the manuscript, we detail the design of the system, provide
source files for continued iteration, and show some example schlieren images
and videos of a butane lighter, a jet of compressed air, and an electric stove.
