Hi Michael,

i also use Blender for exporting to .wrl for 3D printing MoI models. I always changed the specular in Blender because of that issue. After reading your post i just switched the specular ammount to 0.0 in the .mtl and it seem to fix the problem, because now Blender shows a black color for spec instead of white.

Attached are two images for you to see the difference.






Best regards
Stefan