Finishing up!

Nick uses plaster-cloth to cover the hillside above the tunnel.

We painted and ballasted the track, added a retaining wall and added an initial layer of dirt-glue-celluclay ground cover.

Ready for trim: we cut some pieces to cover all four sides.

Gluing the trim.

Now for some grass and trees.

Pretty much finished.

Our one structure is an outhouse.

Using a “storey pole” marked with the locations of the bents, we shaped each bent pretty closely to the contour of the ground where they would be planted.

Then we glued the bents to the span — laid out upside down on the bench.

Once the glue dried a bit we set the bridge up and started gluing on teh cross braces. This really strengthens the bridge.

Finally we test fit the bridge in place.

Once the bridge was planted we soldered up the approach tracks and it’s time to test that track again!

Next we made some guard rails by shaping rails as if they were going to be frog rails and soldering them together.

All for now!

Note that we pre-stained the wood with a simple ink-alcohol mix. Here’s the other side of the bridge.

The temptation to play with a train is just too much to resist!

We made little bents to go against the retaining boards glued earlier — the white glue is wet and still visible here.

We’re following the basic construction techniques of the Northwestern Pacific Railroad as seen in their Corte Madera Creek bridges since we can walk up and inspect them today.

Using six scale beams glued in two groups of three I made the main span and glued some Micro Engineering code 83 bridge track onto it.

In parallel while glue is drying we’re making more tunnel lining castings and painting the tunnel portal.

Using our jig we made the five trestle bents with profiles roughly matching the ground under them.

Once the base was set up and roadbed established we started to build up the hill and tunnel out of 4″ thick Styrofoam.

We cut a mock tunnel portal for sizing.

Then we gave everything that would become “ground” a good coat of dirt-colored latex paint.

Then we started preparation for the installation of the trestle bridge by hot-knifing the end abutments and here I’m making a “story pole” that will be used as a template for the location and height of the bents. The track has been rough cut and painted but is not yet installed.

We used Micro Engineering code 83 flex track and here we’re preparing some matching Micro Engineering code 83 bridge flex track with appropriate ties and spacing.

To make the bents we made a jig into which 3/16″ dowels will be held while being glued.

While the glue dries on bent assemblies we started to make plaster molds of the tunnel interior using a Woodland Scenics mold.

Nick joined our “build stuff” group with no idea what he wanted to build. We suggested he look though our library of books and he saw my copy of Stindt’s “Northwestern Pacific Railroad” and started explaining to me that this was the railroad that used to run through our neigborhood.

This, I knew. What I had not known is that Nick was a rail fan.

We had Nick sort through and tag all the photos in the books he liked and ended up with a concept of a micro-layout with a tunnel and a bridge.  We had about 50 building hours available to us in the project series so things needed to be kept small and simple.

Nick tagged about 50 different photos and we scanned them quickly at low resolution so we could see them all together. We all saw that Nick was strongly attracted to tunnels and trestle bridges so I proposed a small diorama with a hill, creek bed, tunnel and a bridge.

To get things started we cut some plywood to define the footprint.

Although it is not my favorite technique, I had a lot of styrofoam around so we cut and built up layers of foam.

We marked where the tracks, bridge and tunnel would be. I suggested making the tracks “skewed” (not parallel) to the layout edge but Nick insisted he wanted it straight.

Pretty soon, we had something starting to look like a micro-layout.