adding COLOR for ZCorp color

Does anyone know how I add color - say black - to some stl faces so they will print in color in the zcorp color process?

Can this be done in Rhino?

Thanks.

STL format (as used by Shapeways) won't support color.. switch to VRML or another color-supporting format.

Hi. Thanks.

Do I just save out of Rhino as VRML or is it more complex than that?

Thanks.

Jon

Hi. Thanks again.

Looks like I have the option to save as 1.0 or 2.0 and then I have checkboxes for Vertex Normals, Texture Coordinates and for Vertex Colors. Does it sound like any of these three should or should not be checked/

Do you know if Shapeways can accept the zpr format?

Thanks.

Shapeways accepts VRML 2.0, no ZPR yet. Colors can be stored in the vertices or a texture map, but in your case, with flat colors, you are looking for vertex color only. Vertex colors will eventually be transferred to face colors, so color boundaries will not be maintained.

You can also color your STL in Meshlab and Output a VRML. It is common to have to re-scale the file anyway, since VRML units are always in meters. You can do both in Meshlab.

Simple Coloring: Filters>Color...>Vertex Color Filling

Rescaling from mm to meters: Filters>Normals...>Transform:Scale, Enter 0.001
Then (important) Filters>Normals...>Freeze Current Matrix
Save as VRML (*.WRL)