A friend of mine gave me his Hydrocal leftovers (about 30 lbs.) a couple of years ago, and he'd had the sack for maybe 3 or 4 years prior to that, so the stuff is pretty old.  It's been stored in the original sack, which was placed in another heavy plastic bag, and stored in a dry place.  A couple months ago I wondered if the stuff was still good so I tacked a piece of screen to a scrap of plywood, mixed a batch of the Hydrocal and applied a nice coat to the test panel (about 1/4" thick).  It set up quickly and the following day it was pure white and very hard.&n

The revisions and whatnot of building the N-scale BTR to the stage that it is currently at has left me with a small stack of spare wood panels and planks. I couldn't leave them with the layout as the "train room" is just off the front door. Early 21^st Century scrap yard is simply NOT an acceptable style of furnishing the so-called living room. So, in trying to find a suitable place to stick said spare panels, I made a happy discovery....

I'm using 2" pink foam board on a new layout  4 - 2 X6 in an U shape. Question what to do with seams  and also surface levels  between modules, getting with in 1/16-1/32", what do you use to smooth out gaps between modules ?  The foam has some irregularities front to  back at the seams, do have level legs and carriage bolts between modules. 

Thanks Zeke

Progress has not progressed at break-neck speed, but it definitely hasn't been spinning its wheels either. In the first photo you can see the old nightstand that I have re-purposed as benchwork for the layout. The second photo a the mockup of a factory flat that will go against the backdrop between the city and rural areas. The backdrop itself will be a 12"x24" sheet of 0.060" styrene.