Homebrew PCBs

>   Could someone with more experience share their advices ?
>

If you get everything lined up a toaster oven modified for reflow will
work, but I've had good luck using conductive glue:

http://www.allelectronics.com/cgi-bin/item/WG-1/570/CONDUCTIVE_GLUE,_0.3_FL.OZ._.html

I suppose your intended use would limit its applicability, I've a had
machine controller running with a glued AT91SAM9260  for just over
three weeks with no problems so far.

i agree, though that the best strategy is to avoid BGA packages like
the plague!

Curt