I decided on using sheet styrene for the fascia since I had a fair bit left over from the backdrop. I started with the lower fascia. It was a simple matter of installing the fascia cut roughly to the right shape, installing it on the module, marking the final profile of the fascia, de-installing, making the final cuts and reinstalling. OK it was a bit of a fiddle, but worked out just fine in the end. I used #5 brass screws from Lee Valley with #6 cup washers to hold the fascia on. The cup washers are highly recommended; they spread the force of the screw over a wider area and help keep the styrene from tearing. I also created 3″ wide wings at both ends of the module as per Iain Rice’s suggestions. They help frame the module.
Here’s a photo before the paint went on:
After installing the lower fascia, I turned to the top fascia. I first cut a 3/8″ piece of plywood to the same footprint as the module. This piece sits on standards above the module proper. I then cut a 4″ wide piece of styrene for the top fascia. Again, these were installed with screws and cup washers.
The fascias then got several coats of dark brown semi-gloss latex paint. The brown colour was based on my flat earth colour but darkened considerably by the addition of black to the tint:
