To start construction of the slide area, cardboard strips were hot glued together. A shelf of poly-iso foam was hot glued in place to support the rock castings (above). The castings were cut with a ra-
zor saw to fit the shape of the shelf. Red rosin paper (above right and below) was cut to fit the cardboard base and hot-glued in place. The paper forming the slide was crumpled prior to being installed.
glue helps cement bind to other ce- ment. White glue became an ingredient in the mix. There were lumps in the ce- ment, so we squished them to powder before starting to mix our cement coat- ing. We started with a small batch that we could mix in an eight-ounce dispos- able plastic glass. This was a good thing because the cement started to set up in 20 minutes. The wet cement wasn’t a light gray;
it was a dark gray-green. Even know- ing the color would change a little after the cement set, into the mix went white acrylic craft paint, enough to lighten the color until it looked correct. I used an inexpensive, one-inch coarse brush to apply the cement to the wood piers and brushed it on horizontally to represent
the lines created by the
forms. They weren’t perfect, but the ef- fect was great.
The rock castings were joined together (above) using Hydrocal applied with a finger. This makes a continuous rock face. Hydrocal was also used to form the shelf behind the rock wall. The rock wall slopes down following the angled face of the hill.
RAILROAD MODEL CRAFTSMAN
The position for each pier was marked on the base. The actual base for the trestle was a sheet of poly-iso roofing insulation, and each pier was hot glued in its place. So far, so good. Next came the trestle, and here the poly-iso foam was helpful in another way. Once the location of each trestle bent was marked, a small hole was punched in the foam for each post and the trestle bent was then securely glued in place in the foam. The only problem was the color of the piers. The color was too uniform and gray. I brushed on very diluted white acrylic craft paint until I liked the color. After this dried, I repeated the washes using a diluted brown, varying the tone a little. The final color coating was a light wash of rust. All this was done with the piers in place, and when it was done it really looked like concrete.
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