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I checked into it further and found that the Insulfoam or R-Tech is the kind that will crumble, no good. <br /> <br />I just need one sheet. I think ordering a bale is out of the question unless there are other takers in SoCal (Orange County) that need some. <br /> <br />I'm building a coaling tower (Chama) and sanding house in O(n3) scale and would like to mount them on the foam. I will need a few layers below ground level to encase the coal pit which extends about 3" (12') below grade. I will also need to add layers above grade behind the tower for the hopper dump track. Of course the sides of that track will need to be sculpted. Any suggestions for another material or technique to create the grade?
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