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Still trying new things today. Cut a roadbed out of half-inch blue foam insulation board, beveling both edges with my utility knife. Since the box cutter left a ragged edge, I made a hot foam cutter from and old Weller soldering gun. Stripped a nine inch rail from a section of straight track and bent it around to replace the Weller soldering tip. Then made a square cutting loop by pounding the rail flat over and anvil. I used it to smoothe my roadbed edges. Then I ran a bead of polyurethane spray foam down a strip pf OSB board and immediately slapped the foam roadbed on top. Then I applied a coating of caulking (Alex) compound to the top of the blue polyfoam and smoothed it out with a tape knife. Then I sprayed a coating of Krylon Brown over the whole thing and pressed a section of flex track into place. Next came a sprinkling of kittlylitter ballast, size graded to 20 mesh. I pressed it in place with my fingers and brushed off the excess. And just to make sure, I gave it a top coating of Elmer's spray cement. Last I checked the thing had solidified into an impermeable mass. Once the polyfoam gets hold of either foam or wood, it won't let go. I discovered that blue foam board comes with a thin and transparent polyethylene film on both sides that must be stripped away if you want to glue the foam to anything else. Another tiring but sucessful day working on the railroad. <br /> Bryant
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