 
          Getting Real column - 5
        
        
          technique described below. Figure 10 shows the completed
        
        
          cross section of the Celotex roadbed. Diagrams A and B show
        
        
          how the profile was created.
        
        
          The basic measurements for HO scale are shown in Diagram
        
        
          A. The dimensions for other scales are included in the original
        
        
          article. Diagram B shows how a length of 2 x 4 was used to
        
        
          create a jig to cut the ballast slopes. This jig covers the large
        
        
          portion of blade exposed in making these angle cuts (see dia-
        
        
          grams A-B).
        
        
          The 2 x 4 jig is fastened to the saw fence with screws (11). A
        
        
          second piece of 2 x 4 was clamped to the saw table to hold the
        
        
          length of Celotex against the jig and blade. Also a strip of wood
        
        
          was screwed to the top of the jig to hold the piece down on the
        
        
          11: Jig for cutting roadbed.
        
        
          
            11
          
        
        
          MRH-Jan 2013