" Well, it is clear to me that he has done a very good job on you, " said Scrimgeour, his eyes cold and hard behind his wire-rimmed glasses, " Dumbledore's man through and through, aren't you, Potter? "
Tara by contrast is bronze through and through, so whoever made her must have had a great deal of bronze, rare skill and a lot of experience of this very challenging kind of work.
The sap could not move upward for the trunk would solidify through and through, trying all the while to protect and killing the tree with its obsessive kindness.