Solder Paste Syringe
A solder paste syringe would most likely be based off the Stringe Based Extruder
This extruder would be very helpful in preparing a board for manufacture. If it could automatically add solder paste in all the right places, it might be possible to make board fabrication very easy.
It might apply solder around all the pads on the board where component legs need to be attached. Next, place components onto the board where they need to go. It may be possible to use a heat gun or some other device to melt the solder en-masse. If not, then theres always hand soldering. Which would definitely be easier if there were solder pre-applied where you needed it.
-- Main.ZachSmith - 11 Feb 2007