So here's what it looks like just out of the mold: Overall I'm happy, but were I to do it again there are a few things I'd pay more attention to. First and foremost is the mix, I was hurrying too much in the beginning and didn't realize that some of the concrete was not totally mixed-hence this spot here: Next, I'd vibrate A LOT more as there were still a fair amount of voids and pinholes even though I vibrated with a sander and tapped with a hammer. A better flowing mix would probably help a lot with this too. The imperfections give it a little character, kind of like stone, IMHO, but for an actual kitchen countertop you would want as smooth a surface as possible of course. Here's what it looks like after sanding and sealing: Now all that's left is lifting the beast into place!