Broken Fence; What Is It? Shower Valve; Keyless Chuck

Roger repairs a broken fence with teenage neighbor Amanda Rao. Back inside, the guys ask, ""What Is It?"" Then, Richard restores hot-water flow to a shower for a house-sitter by repairing an anti-scald shower valve. Back in the loft, Tom shows how to upgrade an old drill by installing a ""keyless"" chuck.