Dome after a good deal of finishing

The dome (gelcoat/fibreglass) was cast using a plaster mould, as per the Workshop Manual.

I managed to get two domes from the plaster mould before it was too damaged to use.
The dome edge was trimmed with a sharp knife while the fibreglass was still 'green' (soft enough to cut).
A great deal of time was spent getting a good finish.

Spray putty (see previous picture) was used to fill any defects, and then came lots and lots of wet-n-dry sandpaper (used wet). Note that I've opted for a 'rounded' bottom to the eye slot. This pays homage to one particular dome from the 1960s.