Thanks for all of the nice comments, I do appreciate it. First off this is for an ON30 module set I've started working on. It is an 'artistic' representative model of the Chama New Mexico coaling tower on the narrow gauge. It is a small tower to some but for most home layouts it towers over anything else on the layout. The dimensions I got from the Sandia Software Multimedia Adventure DVD that they put out several years ago. My CNC machine is basically a large wood working computer controlled router 48x96 inch that I use for the live steam hobby stuff I do. BUT it works just fine for also doing 1/48th scale stuff! 
I have lots of little details that I will add over time to the tower, like the chute, weights, doors, windows, etc,. Next up is the sand house that is also at Chama. All of these structures I have already done for other layouts so it was just a matter of putting in the sintra plastic and hitting the go button! Sintra is a pvc plastic that comes in 48x96 inch sheets in various thicknesses and colors and glues up with regular old hardware store pvc pipe glue! Thanks for looking in. Russ
from the live steam hobby stuff I do:
cutting plywood on the CNC machine:
