*Snape has had no official training in leverage but he has had some in the use of tools. He fishes around in the mud until he finds a sharp rock and starts gouging the wood where the axe blade is buried. His strength and coordination in this task may not be as good as Wesley's, but he has endurance and keeps hacking away obediently; he has followed instructions most of his life and this is just one more instance in his mind. He makes an occasional grunt from his efforts but otherwise is silent. He also knows better than to interrupt Wesley's surly moment.*