The Purchased Slab unfortunately had a big Soft inclusion on the front for which I had to break out the wood over top of it clean it and re-glue the broken part. I also dropped the thing leading to a crack i repaired with dowels. Apart from that and the 10s of smaller defects it was just sanding and linseed oil coats.
The inner radius was by far the most annoying to get smooth because I had to hand sand (With a beer bottle as a sanding block), but it's now my favorite part because the wood there just so happens to be the most interesting piece of wood in the slab.
The previous counter was a white Vinyl particle board affair and the improvement from that is so substantial I still smile every time I look at the damn thing.
That looks great. I'd bei scared to get water marks, what did you use to seal it?
Some kind of boiled linseed oil. It'll get marks but spot sanding and more oil will take care of them if they are noticeable enough. If the water just sits on it for a short time it won't really care up to like a few days, longer sitting water e.g. around the sink will stain slightly and get rough.