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[quote]QUOTE: Originally posted by Capt Bob Johnson Glen, I was saying to use the backerboard behind the styrofoam to provide rigidity and strength, yet use the foam for it's carvable quality. I also like your idea of using a cementisious (sp???) coating over the foam. [/quote] Sorry Bob, my mistake. Over here we have a type of Limestone that they used for buildings back in 1900. It carves easy too, trouble is that is soaks up water like a sponge. A friend make some really nice tunnel mouths and bridge abutments with nice detailed stone work in all of them. However in winter it soaked up the water. Then the frosts came and it froze. When it thawed the water expanded and it exploded it apart. So the ones that weren't damanged he put a cement slurry over to protect them and he hasn't had any problems since. That's where I got the idea. Walt, if you do get some Hebel (and the price is right) here is a website how to use it. http://www.users.bigpond.com/huntergpmj/gregs/hebel.htm Over here they make blocks 550mm long X 200mm high and widths can be 50, 100, 200 300. They are quite expensive, but you only need a few to get a good result. Glen.
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