currently in rhino 8, if an object consisting of e.g 4 individual parts has one “metal” material applied to each of them, when exported as an .obj, the .obj will have 4 parts with the materials “metal, metal_1, metal_2, metal_3” rather than 1 “metal” material applied to all 4 parts.
this appears to be a bug as rhino 7 would have produced an .obj with 4 parts each with a single “metal” material applied consistent with the rhino 7 file.
this is also true with image files.
if an object consisting of 4 parts each has a material with a “bump_grit” texture applied to it, on export as .obj there will be “bump_grit, bump_grit_1, bump_grit_2, bump_grit_3” image files found in the .obj export location.
