http://www.buildingmodeltrains.com/casting-rocks-and-cliffs-using-latex-rock-molds/ Examples and stories of building model trains. Wed, 31 Mar 2010 06:05:44 -0400 http://wordpress.org/?v=2.8.4 hourly 1 http://www.buildingmodeltrains.com/casting-rocks-and-cliffs-using-latex-rock-molds/comment-page-1/#comment-202 Brian Torch Thu, 31 Dec 2009 19:53:23 +0000 http://www.buildingmodeltrains.com/casting-rocks-and-cliffs-using-latex-rock-molds/#comment-202 Hi Mike: >> I like your, "styrofoam peanuts" idea! >> Plaster takes five days to harden up; wait that time to scenic, and it will be OK (hard). >> I paint the moulds with plaster, to stop airbubbles from forming. (hard on brushes, unless you clean them right away) > Also, one can use an orbital sander to vibrate the bubbles out. >> Retard the plaster with a dolup of vinigar in the water bucket,(with a bit of dish washer detergent). Hi Mike: >> I like your, “styrofoam peanuts” idea! >> Plaster takes five days to harden up; wait that time to scenic, and it will be OK (hard). >> I paint the moulds with plaster, to stop airbubbles from forming. (hard on brushes, unless you clean them right away) > Also, one can use an orbital sander to vibrate the bubbles out. >> Retard the plaster with a dolup of vinigar in the water bucket,(with a bit of dish washer detergent).

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