Yes, @WayneHall, you are correct. It’s less that the cutter isn’t working as intended, as it doesn’t matter what type of flattening bit I use. They are designed to cut in a certain direction, and do not cut as well in the other. On edge board flattening, it doesn’t appear very much. But on end-grain, it definitely shows - clearly visible in the prior picture. It requires a lot more sanding to smooth it out, and is frustrating as only the cuts in the front to back direction really need the extra work. You can also see it when I flatten the waste boards, stripes based on direction. No ridges, it’s still nice and flat, just striped.
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