Has anyone tried Masterbonds conductive epoxy for
attaching SMT components to a printed circuit board?
Seems like a great idea, especially if it works well::

Sounds like a terrible idea. The surface tension of solder and the
solder mask/PCB landing on the circuit board interact very nicely to
make sure that a blob of solder and the part itself stays on exactly
the right spot when you solder on a SMT component (either hand
soldering or toaster-oven style). None of that is working to your
advantage when you use epoxy.

Hand-soldering even fine-pitch (0.5mm) SMT stuff is not a big deal to
do by hand with even primitive (e.g. just a weller soldering iron and a
fine-tip point and some solder wick) tools. BGA's will require a
toaster oven though :-).

Tim.