What kind of metal do you want to print? Here in the US, Dupont sells a range of metal conductors, primarily for PV applications, that are various mixes of silver and/or aluminum, thicknesses from 10-50u. The high temp silver and Al conductors require 675C or higher to fire. Dupont also sells epoxy and thermoplastic silver pastes that cure at low temps, but these typically do not have as low an R value, and are not as rugged. USeful for substrates which cant withstand high temps such as plastics. Ferro is another source. If your looking for solder pastes, thats a different matter. Trend is now lead free, typically 5% silver, 95% tin. -- Tom Rust Nanochip Inc (510) 339-6263 (510) 339-9636 FAX (510) 912-4662 cell http://www.nanochip.com