So today I tried to do the final sanding on the top/front. It was curing for more than a week (the back is still too soft, needs a few more days) and I tried to lightly wet sand it, starting with 1500 grid. Yep, almost sanded through the finish in one spot. I realized it before disaster (because the grain started to show when using hard edge lighting) but still, fuark. I mean, it took around a billion coats of tru oil to fill up the grain and tada, I sanded it down to zero. Great work, you fool.
Alas, I'm back to adding a few billion coats more of tru oil. Probably a good thing I was wise enough to order a new medium bottle yesterday.
In hindsight, I wonder if I should have wrapped the corners in painter's tape and just slam on 1cm of epoxy. Instant high gloss surface. No?