Hello I'm interesting in doing some silver casting and consider using Google Sketchup (not Pro) to make the casting forms - which I would like Shapeways to 3D print for me in a suitable material. Any of you know if Shapeways can work with Google sketchup files (not the Pro version) for 3D printing? And also if they have materials that can be used for silver casting (a melting temperature of about 1000 degrees celsius)? Thanks for reading and maybe replying Jesper P.S.: If this is not possible using Shapeways, I'd appreciate suggestions for an alternative - yet similar - service.