I made good progress with the mast today by fitting an all round white masthead light and its flex. I also glued the front piece between the two side pieces. At the time of drafting this, the mast occupies the corridor between the front door and the kitchen, where it can be kept warm while the epoxy hardens.
Jobs yet to be done are the rounding of all four corners along the sides; fixing the conduit for a small section of the flex bypassing the sheave slot; encasing the upper section of the mast in fibreglass, including the sides of the sheave slot; installing the sheave; fitting a burgee halyard with its cleat; attaching a leather band to prevent wear from the boom, and coating the mast with Deks Ole or paint. I may add a Windex at the masthead.