This new toolhead allow RepRap to manipulate surface mount components. If a milling head and solder paste dispenser could be added to RepRap then production of the required PCBs could be fully automated(except you\'ll still have to solder on the non SMT components). How it works: a small vacuum pump creates suction in the blunt tip needle to pick up SMT components and the gear motor rotates the component into the proper position. NOTE: I designed this a while back, it\'s designed for RepRap Darwin, but you might be able to get it to work with RepRap Mendel. More useful information in this thread: http://dev.forums.reprap.org/read.php?14,15167Materials: 6 20 mm M3 cap screws 3 35 mm M3 cap screws 1 10 mm M2 screw, or whatever screw will couple with the shaft on the GM3 gear motor 1 18 gauge blunt tip dispenser needle 1 magnetic rotary encoder and magnet retrofitted GM3 gear motor 1 meter of 4 mm diameter aquarium tubing $0.43 a low vacuum pump, possibly a reversed aquarium air pump Instructions: