As you say the split was certain to occur, and even when the slice is down to its final moisture content it will continue to open and close slightly with variations in ambient moisture levels. You can't stop it moving so anything used to fill the gap would need to be flexible. I suggest completing the table and leaving the split as a feature.
Hey guys, brilliant! Love the idea of incorporating it into the finished item as a feature, saves a lot of wasted effort as well!
I'll get it planed down thickness wise and then decide. The wedge/leg idea is a real possibility!
I'll let you know what happens!
You aren't going to like this, but this is doomed to failure. Wood moves about twice as much circumferentially as radially, hence the split. That's why you don't see tables with end grain tops often, if at all. I would save the split :wink: , use the surrounding wood for winter fuel, and make a properly engineered top.