Over on the RepRap blog, [Rhys] has been experimenting with molten metal to build circuits with the RepRap. Last June, [Rhys] found a neat alloy made of Tin, Bismuth, and a little bit of Indium that melts at around 130° C, and has just the right properties to be extruded with a standard RepRap setup. The results were encouraging, but the molten metal quickly dissolved the brass and aluminum … [Read more...]