I found the files for this on Thingiverse, though it was  listed as and included files for a steam shovel. It was also set up as 1:48, so I multipled it by .55 when I printed it to make it HO scale.  Printerbot Play printer.  The roof is styrene and tin foil.  

I've been following posts regarding the use of XPS foam on layouts. Some of the comments mentioned that the material releases small amounts of gas and that it shrinks somewhat. Is this a long term issue or does it only occur shortly after it's made? The Owens Corning web site mentions that their product has a linear shrinkage value of 2% max. That translates to 1.92" over the 8' span. Has anyone experienced anything like this?

At one club's last Ops Session I was really impressed by a long passenger train that actually had a lot of passengers, so now I am issuing a challenge to all serious modellers: Wouldn't it be great if every lead unit in a consist, every lone loco on the point, and every caboose on the tail had crew members? Let's get that idea rolling, starting with me! John Colley, Sonoma, CA

Following are fotos of the yard and shops module that represent the town of San Esteban on the Norh Fork mining district branch of the Montezuma, Snake River and Northstar RR. No where near completion, these are progress shots only. Following TOMA principles, I've constructed the first of 2 modules for the yard and town, this one being 8 feet long by 2.5 feet wide with a small peninsula that will hold the Round House and shop area.