The major project for me this
Spring for my railroad is fleshing out three-dimensional scenery elements. The first such effort dealt with the Summit
Tunnel, Tunnel 3. (https://espeecascades.blogspot.com/2018/02/the-purple-pink-mountain-majesties.html
) Continuing downhill, the next tunnel
on my railroad is Tunnel 5, including its rock shed on the RR-West end. As with the Summit Tunnel, Tunnel 5 occupies
another corner of the alcove space of my main layout room.
I began the scenery shell
over Tunnel 5 in much the same fashion as the Summit Tunnel. I attached support plates to the inside of
the fascia contour and to the wall. I
then spanned the gap with four-inch wide plates of pink insulation foam,
cutting these into triangular pieces to work around the corner.
Forming the corner mountain
shell for Tunnel 5 and its Rock Shed.
Having turned the corner, I
built the rest of the shell for the tunnel and rock shed with more planks of
pink insulation foam. Arriving at the
portals, I shifted to stacking vertical planks of foam cut to the desired terrain
contour. I used this technique to fill
in the wall gap between the portals for Tunnels 3 and 5 and then extending
further downhill from the RR-East portal of Tunnel 5. The foreground between the track roadbed and
the fascia was filled with horizontal foam planks with vertical contour planks
used on top of that where needed. I also
added foam blocks on top of both the “fan-shape” above the Tunnel 5 Rock Shed
and on the ridge over the top of Tunnel 5.
This helps break up the flat areas and provided a base for rock
outcroppings.
Tunnel 5 rough terrain shell. Note the large foam blocks above the rock
shed “fan” on the left and on top of the ridge for the tunnel (area above the
vacuum cleaner). Also note the use of
both horizontal and vertical foam planks to form the terrain along the wall to
the right from the tunnel portal.
I experimented with spray
insulation foam to add to the rock outcropping blocks and to suggest more rock
outcroppings along the walls. With a new
material and application method (spray cans of insulating foam), I had a learning
curve. I found the foam came out of the
spray nozzle as about a one-inch diameter extrusion that I needed to apply to
the desired locations. I snaked this
around the rock outcropping areas. I
also used the spray foam to fill several gaps between foam planks I had
left. I then discovered the spray foam
continued to expand for several minutes after the initial application. This left much bigger “snakes” of foam.
As I noted in my discussion
of the Summit Tunnel terrain base forming, one becomes a sculptor, removing
material that was intentionally (or unintentionally with the spray foam!) “overbuilt.” In the case of the spray foam, I removed a
lot of material. In some cases, perhaps
10-15% of the spray foam initially applied remained after carving and then
scraping. The pink foam was installed to
be close to the desired contour. The
spray foam needed to be carved back with a knife to get the rough size and
shape desired. In both cases, the final
shaping was done with a Stanley Surform ™ scrapper—a very handy tool!
Terrain shell carved and
shaped. The tunnel portals and track
have blue tape applied for protection, particularly during the spray foam
process.
The final step in forming the
base scenery shell was the application of Sculptamold ™. Once again, I mixed Sculptamold ™ with
paint for color within this covering. In
addition to my base tan color, I also used gray paint for areas that will show
rock outcroppings. Much like frosting a
cake, I lathered this onto the foam base with a spatula. I am not yet confident in my rock carving
technique, so I intend adding plaster rock castings to the scenery base for the
rock outcroppings. Meanwhile, I have
another tunnel and stretch of wall with the scenery base installed.
The EUOAY led by SP9183
emerges from Tunnel 5 and its rock shed as it nears the summit of the Cascades.
The EUOAY and SP9183 approach
the RR-East portal of the Summit Tunnel.
The helper set for the EUOAY
approaches the RR-East portal of Tunnel 5.