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Alex1N: Blue foam block and OS2U cowling rear template
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Alex1N: Blocks of blue foam cut
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Alex1N: Protective backing removed from double-sided tape
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Alex1N: The two smaller blocks stuck together
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Alex1N: Taped blocks with futher tape added for the larger block
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Alex1N: Three blue foam blocks stuck together
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Alex1N: Rear template temporarily stuck on
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Alex1N: Blue foam blocks glued together with boat-building poyurethane glue
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Alex1N: OS2U cowling side-view template (left) and plan-view template (right)
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Alex1N: Kingfisher drafting-film templates sitting on the pieces of 3 mm balsa