Bill of Materials
The name brand of all the brass is "Metal Works" from Menards.
1 - .081 brass rod -- coupler pins
2 - 3/32" X 3/16" brass rectangular tube -- inner bunk
3 - 5/32" X 5/16" brass rectangular tube -- backbone
4 - .015" X 1/8" X 1/8" brass channel -- outer bunk (optional)
5 - 2 1/2" HO scale NBW (grand line #5094)
6 - 1 3/4" HO scale NBW (tichy #8016)
7 - kadee #5 coupler
8 - part of kadee #232 pocket (part with the bushing
9 - .015" shim kadee #211 (the other half of #232 may be used if trimmed, but it is somewhat difficult to get smooth action)
10 - small rod for supports
11 - Trucks, wheelsets and mounting screw, your call.