Here are the basics of one way to build a mini-module. This one is made from parts purchased from a company that makes model railroad layout frames and legs. You could make your own.



The important thing is that the dimensions have to be as follows:
Length or depth: 36" (plus or minus 1/16")
Depth or length: 18" (plus or minus 1/16")
Distance from the top of the rails to the floor: 40" (with 1" up and 1" down adjusters)


Other requirements:
Two mainlines, code 83 track:
Eastbound: 4" on center from the front edge
Westbound" 6" on center from the front edge


Electrical wiring and connections:
Follow the specs for the club's regular modules.
Wiring colors (starting from closest to the visitors' side of the module): Orange (eastbound — engineer's side rail)
White (eastbound — fireman's side rail)
Blue (westbound -)
Red (westbound +)
Green (siding -)*
Yellow (siding +)*


*A third track is not required. If used, these are the wiring colors.

Mini-module recommended dimensions showing 2" foam — subject to change.


The mini-module at the left has traditional construction above the frame. The one on the right uses 2" foam. Using 2" foam is lighter weight but is more easily damaged during transport.


Here's a mini under construction.