What I meant by entrapments is the split wood strands, that extend from one side of the crack to the other, still well attached to each side. These should help any epoxy bond well to the two sides and remain secure.
The tree with rootball was dozed 2 yrs ago. I milled the log, back then, b ut only worked the rootball in the past 2(?) months. The rootball had bee n sitting out there all that time. The wood was still wet, when router p laning. Now, all the surfaces feel dry and I hope the inside of the crack has dried somewhat, also, but the leg slabs are definitely wet.
I'll trim those leg units... just didn't get to it last night.