Woodsy,
I started this new diorama base project back in May and this is as far as I've gotten.
Except for the cheap framing, I already had the other materials on hand and decided they needed to be put to use. It's 48" x 38.5" and consists of two sheets of Masonite, glued and tacked onto a frame of fake wood (don't know what they call it but it's a plastic-like material), over which 1" sheets of Styrofoam are glued.
The crater rim is sheets of 1" Styrofoam cut and glued to the board. To finish this, I'll need to carve the foam to its final shape, cover everything with plaster (or similar), and then paint.
Here's the kicker: I can't do all that carving, plastering, and painting in the house, so it'll need to be done outside but it's gotten warm out there (we're looking at 112°F/44°C out on the patio). Plus, I have other things going on in my life.
Hopefully I can re-engage this project this coming Autumn.
The first two photos show the work in progress. The third photo was taken a few days ago after pulling out some of my SpaceX Moonbase HQ's to visualize what a set-up would look like.
See what you think.
From Vegas MoonBase
Ed