Step 6: 3D Printing
I saved the texture maps as a .png files, and exported the object as an .X3D from 3dsmax, which required a plugin. I created a zip file containing the mesh and the texture bitmap, and uploaded it on the shapeways website. It's important to check that the scale is correct, 3d applications handle units in different ways,so some double checking, trial and error, and re-scaling may be necessary to get the correct results. I found that I had to scale my models by 39.37%, (the ratio difference between cm and inches).
Prints in the "full color sandstone material" will have a slightly grainy surface, so going over the print with very fine sandpaper can help. I also gave the 3d prints a thin coat of superglue and matte varnish, to help bring out the colour, as well as seal and protect the surface.