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[quote]QUOTE: Originally posted by OLD DAD Terry; I have built my curved tunnel by cutting "U" shaped wood forms then stapled wire me***o the inside contour of the forms....with the forms upside down. Then I mixed up a batch of brick morter and troweled this onto the mesh. When this had cured I flipped it over and covered it with a "mountain". My tunnel is only 4' long so I can reach in over half way from both ends to retrieve a derailed train or clean my track. If your tunnel is over 4' long you will need to provide an access hatch of some type in the areas you can't reach from the tunnel openings. OLD DAD [/quote] What else might one use in the spackling of such a structure? Water putty? Is brick mortar the only viable substance for mountains and rivers? WHat are you
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