I want to make several vista dome bases for furniture and people for use in LIONEL 15" aluminum cars. The actual unit was offered by LIONEL as a replacement part but is no longer available. Fortunately, I have one to use as a template of sorts. In the photo you'll notice it has projections to which a table top would be attached. Likewise, it has small stubs molded in the "floor" for the seats. I need neither. the posts for the tables or the nubs for the seats.
There is a hole at each end of the base to accommodate a plastic "hanger" that suspends the base from the "ceiling" of the Lionel aluminum extrusion.
I"ve worked a bit with sheet styrene but nothing of this thickness. I had expected to make each "tray" if you will by creating a base to which ends were attached, and two side "lips" were attached as well.
However, after holding the 2 mm material in my hands, I don't think the lips are required for structural support. So, it may be that all I need to make is the base and the end pieces.\
At this point, I would like advice on how to cut this material to create the base; drill the holes at each end (the diameter of which I can measure); and the end pieces with their arch and notch.
More broadly, any advice on how to approach and accomplish this project are always welcome. for looking and for your excellent advice.