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Home » Mold Making » Gluing Foam to Torsion Box |
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PARENT CATEGORY Mold Making |
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LINKED PROFILES The John Lee |
IMAGE
Gluing Foam to Torsion Box OCID cn00000209 |
LINKED CATEGORIES Mold Making |
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Gluing Foam to Torsion Box Photo by David Johnson created 7/11/2002 submitted 11/15/2002 07:32:24 PM This photo shows the completed gluing of the first layer of foam for The John Lee top plug to our torsion box. The foam was donated to the team in 23.75" X 80.5" X 4" (+/- 0.25" in any dimension) blocks. The foam stack contained 7.5 blocks in the bottom layer (3 columns of 2.5 blocks each). Extreme care had to be taken to fit these blocks together so as not to leave gaps between the blocks that would cause voids in the machined plug. The photo shows the many heavy objects the team used to hold down the blocks during the epoxy cure. Epoxy resin was used to attach the blocks to the torsion box. It is not an ideal adhesive to attach foam to plywood due to its low viscosity and the absorption properties of the plywood. Thus significant amounts of adhesive were used on this first layer. gluing first layer of foam to torion box.jpg | 1760 x 1168 | image/pjpeg | djohnson
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| Detail View of The John Lee Foam Stack Photo by David Johnson created 7/12/2002 submitted 11/15/2002 07:37:36 PM This photo shows the foam stack for the top plug of The John Lee inside its crate shortly before shipping out for machining. The photo clearly shows the disadvantage of using epoxy for gluing foam blocks together. The low viscosity epoxy ran out from between the blocks and coated portions of the next layer of the foam stack. Ultimately this caused no problems in machining, but it wasted glue. | |
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