Gotcha. I thought the pics were yours. My quick initial read of your post picked up "almost built" before you moved and I took it to mean you started it but didn't finish it.
Sounds like you and I are in a similar boat regarding ground cover. Take a look at Woodland Scenics ReadyGrass(http://woodlandscenics.woodlan...GrassVinylMat/page/2). It sounds like what you may be looking for and seems very close to what was in your pics.
I've seen the stuff in my LHS and it seems pretty good and not too expensive for a 50" x 100" roll (~$33). Right now it's my top choice. My biggest current question is should I put it over the plywood or put some type of foam down first.
funny you brought that up - I looked at that when I was thinking of building the original one. I wonder how close that is to the sawdust. On the layout I built for my Uncle, he used a different grass mat from scenic express, but I thought it was way to "bright" -
