I built my layout about 14 years ago, in several sections. It is built with 1x2's and 1/4 Launan wood. On top of the plywood are 2 layers of 2" blue foam, then I added roadbed cut from 1/4 launan plywood. This layout was moved from New Jersey to North Carolina 11 years ago. Since then it has rebuilt from an On30 layout to an 3rail layout. I have had no problems with this type frame work. Charlie
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