Several new AM materials were announced in the past week.
silver
HP Developing Precious Metal 3D Printing
HP announced a partnership with Legor to enable 3D printing of precious metals, including gold and silver.
Legal, 3D Printed Coins Produced
A Slovakian 3D print service has produced silver coins that are actually legal tender.
3D Printed Metal Scavenger Filters
New research seems to have developed an incredibly effective method of 3D printing speciality filters to extract specific metals from waste material.
Golden 3D Printing Problems
Could any 3D print service print in precious metals like gold, silver or platinum? Not unless special steps are taken.