Where is the urethane foam used that is listed in the materials list?
The urethane foam was originally included in the Chapter 5 materials list to make the forms for the electrical conduits. However, the Chapter 5 plans call for using 3/4″ Clark foam to shape the conduits instead of urethane. The bottom line is if you use Clark foam for the conduits, then you do not need the urethane in this chapter, though you WILL NEED this foam later when building the NACA scoop (Chapter 7). On the other hand, urethane is probably a better foam for shaping the conduits than Clark; but just make sure you will have enough left over for the NACA scoop. If you use the Clark foam, make sure you purchase the urethane for Chapter 7 since it is not in the Chapter 7 materials list in the plans or the Wicks catalog.
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- Where is the urethane foam used that is listed in the materials list?