Editing Make a fiberglass fan shroud (section)
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===Shaping and gluing the foam=== Cut foam to shape with a handsaw, putty knife, or bandsaw. Then, fit and glue pieces of foam larger than your layout on the board. A hot melt glue gun makes gluing this foam fast and easy. You can also glue the foam down with an expanding urethane glue, such as [http://www.gorillaglue.com/home.htm Gorilla glue], or some of the expanding foam that comes in an aerosol can. The different glues can make sanding over seam lines difficult, as they are usually a different density and hardness than the surrounding foam. Shaping this foam also can be done with sandpaper, surform files, knives, and picks. Even your fingers can shape this foam quite easily and rapidly. Keep the hot melt glue away from where you will be sanding. It is gummy and will not sand properly, making your buck a lot harder to shape than it needs to be. {| |-valign="top" |[[Image:5start foam.JPG|thumb|center|The initial pieces of foam are cut and glued down to the plywood base.]] |[[Image:6scribe a circle.JPG|thumb|center|For the round part of the shroud, a circle is scribed in the foam.]] |[[Image:8laying out the circle.JPG|thumb|center|More pieces of foam are cut and glued along the scribed circle.]] |[[Image:9it's hot melt glue.JPG|thumb|center|The glue won't sand properly, so keep it off the areas you will be sanding.]] |}
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