Rendered object turned black


I have a product that I’ve modeled and rendered in a “blue metal”. I then exported that as an stl file for prototyping. Now the object is solid black and Im not sure why? Any ideas of how that may have happened?Sputnik Pin.3dm (479.2 KB)

Hi, is this the original Rhino file from which you exported the mesh, and it lost the colour information, or is this a new Rhino file into which you have loaded the .stl?

FWIW the 3dm file loads fine in Rhino WIP for Mac (blue metal and all).

Thanks but what I cannot figure out is why it looks different everytime I open the file? Perhaps its something with my computer although I’ve never had the problem until now?

Hi Graham,

Its the original file from which I exported the mesh.