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Home   Track Building   Routing 2
 
Constructing the Track - Routing part 2
 
Fitting the sections
As the separate sections were completed, they were fitted by laying them on the floor. While the original plan called for cross members every 90 degrees in the turns, It became apparent that more cross members were needed - perhaps one every 45 or 60 degrees.


The donut, lead-on, and part of the straights.



The sections and legs were assembled to verify the alignment as the elevations were added.



The final check that the sections fit prior to dis-assembly for routing the slots.


Looking from the donut and out the garage door.

  • The angle on the wide radius curve was reduced by 4 degrees to provide a slight bank.
  • The last section fitted was the seam in the long top straight. The top straight required shortening by about 1 inch from the dimensions on the drawing.

Routing the slots




Routing the outer slot with the trammel jig. An "up spiral" bit was used, the sawdust choked the trailing slot.




The bottom straight with the 3 right hand curves. Note the elliptical orientation of the slots where the straight meets the curve.




The view shows the 5" gutter on the straight and the transition to the 6 1/2" gutter on the curve.

  • The slots were routed in 3 phases: (1) the lower portion of the track which had 3 right hand turns, (2) the upper section of the track which had 3 left hand turns, (3) the "S" section joining 1 and 2.
  • The outer slot was routed first using the trammel.
  • Slots 2 thru 4 were routed using the pin jig.
  • A scrap section was assembled and attached to each end of the track surface to provide for a place for the trammel to run off the last edge of the track surface.
  • The "esses" to join the 2 main sections were routed using a flexible strip, nailed to the surface at 1 inch increments, offset from the slots by the width of the router base.
 
 
 
 
         
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