  Hot glue guns have a bit of a reputation for clumsiness in the
maker community. The liberal, messy application of glue in a
project tends to be associated with amateurish, quick or kludgey
projects (what we in the UK might call bodges), but glue guns
are cheap, quick to use, and allow parts to be separated again
relatively easily if required. Hot glue can also be useful in
sealing against water ingress.  It occurred to me that a cheap
glue gun could be easily and rapidly modified to turn it into a
precision tool. It's basically just a heating element
surrounding a tube through which the glue stick is pushed, and a
nozzle. The gun shape is useful in allowing the user to use a
trigger action to force the stick through the heater, but not
necessary for the actual application of glue, nor desirable for
the precision control needed. A pen shape would allow more
precise control.  This is still to some large extent work in
progress and ultimately, an even better tool will evolve from
the simple modded version; I h