Maple and purple heart end grain board. Just finished oiling it up and am feeling pretty good about it. Thoughts/suggestions? Took a while to figure out how to get the thing perfectly flat without investing in a drum sander. I do have a Dewalt thickness planer which struggled a bit with the end grain purple heart (extremely dense wood). Had a few spots where the glue seems to have squeezed out in such a way that it's preventing the oil to soak into the grain (you can see the 3 or 4 light spots in the maple). Seems to be more of a problem with the maple than the denser purple heart. Pretty pleased with how it turned out but plenty of room for improvement. Anyone else have experience making end grain boards? What strategies did you use to keep everything flat? How about preventing glue leakage soaking into the end grain?