Cutting the top view of the model is the
first step. Cut slightly outside of the line
to allow for a little sanding for a smooth
curve. Note that the scraps need to be
kept to prevent the fuselage blocks from
rocking when the side view cut is made.
Sectional foam construction is best used for fuselages that have complex shapes with multiple compound curves. Flying boats or jets come to mind first. This
method can be applied to portions of a model aircraft as well.
Before assembly, the fuselage sections resemble oddly
shaped doughnuts that, when stacked, create a hollow,
lightweight fuselage. After segment patterns are established,
the fuselage can easily be replicated and even resized.
When working from scratch, the model starts as a row of
foam blocks tack bonded together. The top and side views of
the subject being modeled are transferred to the row of blocks.
The basic fuselage shape is cut from the blocks using a hot
40 Model Aviation JULY 2017 www.ModelAviation.com