The woodworkers create a sea-inspired sculpture from a tree trunk and turn a perfectly proportioned spinning top on a traditional pole lathe.

Mel Giedroyc presents the semi-final in which the remaining four woodworkers have to build an elaborate desk on a two-day time crunch. In the skills challenge the contestants create vases out of cut-offs in a fight for that all-important immunity, but just who will grab their place in next week's final?