Just received my new, CNC'd OJ prop today, but I was surprised to see two blades were perfectly machined, and two others we "ground and polished." Tried calling OJ, but they are closed until Monday. Has anyone else seen this on a "NEW" prop? I thought the purpose of milling them was to keep within a 1/1000th tolerance? If that's the case, why are they having to grind them post-CNC?
Can't seem to get the image to embed, so here is a link