  In the first part of this work we explore the geometry of infinite type
surfaces and the relationship between its convex core and space of ends. In
particular, we show that a geodesically complete hyperbolic surface is made up
of its convex core with funnels attached along the simple closed geodesic
components and half-planes attached along simple open geodesic components. We
next consider gluing infinitely many pairs of pants along their cuffs to obtain
an infinite hyperbolic surface. Such a surface is not always complete; for
example, if the cuffs grow fast enough and the twists are small.
  We prove that there always exists a choice of twists in the gluings such that
the surface is complete regardless of the size of the cuffs.
  In the second part we consider complete hyperbolic flute surfaces with
rapidly increasing cuff lengths and prove that the corresponding quasiconformal
Teichm\"uller space is incomplete in the length spectrum metric. Moreover, we
describe the twist coordinates and convergence in terms of the twist
coordinates on the closure of the quasiconformal Teichm\"uller space.
