Here is a T scale bay-window caboose that I just finished scratch-building. I took photos of the assembly process if anyone is interested.
Assembly photos as requested. I started with a strip of #188 Evergreen Scale Models .125 x .188 plastic trimmed to 32 T scale feet and folded on top of the strip and glued. I sawed the remaining stirp off and filed the edges smooth. Then I used a file to gouge a trough in the center. This allows the trucks to sit closer to the body. Next, I placed trucks from an adjustable chassis on the bottom so they wouldn't come past the body and drilled a .038 (#62) hole to mount them. the seam allows me to center the hole. Next was the bays. I used 2 layers of .040 thick Evergreen Scale Models styrene. I cut the first layer to 7 T-scale x 7 T-scale feet and beveled the edges with a file. I cut the second layer to 6 T-scale feet x 6 T-scale feet and glued it to the first layer. I beveled the edges again with a file and glued the assembled bays to the body.
The bays attached. Then it was time for the roof and end platforms. I used .010 thick Evergreen Scale Models styrene cut to 36 T-scale feet long and a little wider than the body. I curved it gently with my fingers and glued it to the top of the body. I trimmed the sides once the glue was dry. I used the leftover pieces of the same styrene for the platforms. I glued them in place and then trimmed them with a scissors to the same width and length as the roof overhangs. Then it was painted with Apple Barrel craft paints. I powered up my Windows XP laptop and ALPS printer and created and printed decals for the windows and logo. They were applied and the whole caboose was coated with clear flat paint. I re-installed the trucks and test ran it on my layout. I drilled a hole in the roof for a single strand of wire from a piece of 20 gauge stranded wire and glued it into the hole. I trimmed and painted it after the glue was dry. Now it's running on my layout.
Definitely too tiny for me.......I have a picture stored on my phone to show people at our Ntrack setups when they ask "is this the smallest scale?" It shows an N,Z and T scale SD70ACe sitting side by side..........the T scale loco is about the length of the truck on the N scale loco.