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I have a couple of questions for you folks that have prior experience in tunnel making! This is my 3rd layout, but the first to incorporate a tunnel into the scenery. I'de like to know if anyone has scratchbuilt a tunnel liner and what material they've used. Styrene is out of the equation at this point for me. I'm assuming the liner for either entrance need only extend as far as the eye can see inside. <br />Also what have you guys been making that would serve as a "safety net" in case of a derailment inside the tunnel that could be severe enough to cause an engine or cut of cars to sma***o smithereens if it fell off the subroadbed,through the open-grid benchwork, and to the floor. <br />I have provided for access to the tunnel through the back in case of track or train problems that may occur inside. <br />Thanks for any advice you can think of. <br />Matt--Hershey,Pa.
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