 Having just about had it with the beavers, Donald leaves and comes back with a tractor fitted with a vacuum pipe, which sucks in the sawdust through one end and ejects the sawdust into the trunk through another end.This move, however, only ends up over-stuffing the now hollowed out part of the trunk and blows off the outside parts, exposing the beavers (coughing from the explosion) who've chewed the trunk so that now the whole tree is supported on a thin little spindle of wood.Seeing the damage he and the beavers have done, Donald races over and tries to hold up Old Sequoia, but the beavers get the idea to "help" Donald make Old Sequoia fall over.