  We present a construction of closed 7-manifolds of holonomy G_2, which
generalises Kovalev's twisted connected sums by taking quotients of the pieces
in the construction before gluing. This makes it possible to realise a wider
range of topological types, and Crowley, Goette and the author arXiv:1505.02734
use this to exhibit examples of closed 7-manifolds with disconnected moduli
space of holonomy G_2 metrics.
