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Old 12-12-2019, 05:41 PM   #24
BillTrzaskus
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Join Date: Dec 2019
Location: Tinley Park, Illinois
Posts: 9
Scales Modeled: O gauge 3 rail
First layer is 1/2 inch OSB screwed to the framework then 3/4 inch high density foam glued down using silicone caulk. Then the track is glued to the foam with the same silicone caulk. Since mine is an industrial layout, I don't need a raised roadbed for a main line.
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