Great Planes MiGLET Ducted Fan ARF - GPMA1866 - Manual (Page 8)

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5. Drill a 3/8" [9.5 mm] hole at the mark you made. A drill
bit or hobby knife can be used. However, we suggest
following the
“Expert Tip” below.
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6. Feed the ducted fan motor leads through the hole you
made in the duct channel top. Glue the duct channel top to
the fuselage with epoxy or foam-safe CA glue. Be sure to
apply glue to the top sides of the duct channel top. Allow the
glue to cure undisturbed.
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1. Measure back 7-3/8" [187 mm] from the front of the
duct channel top and make a mark on both sides of it as
shown in the pictures above.
Install the Servos
B. Press the tube into the foam and twist. The sharp end
will cut a clean hole through the foam without tearing.
A. Locate a brass or aluminum tube with a diameter of the
size hole you wish to make. Use a rotary tool with a cut-off
wheel to bevel a sharp edge onto one end of the tube. If you
do not have a rotary tool, a hobby knife can also be used to
carve the INSIDE of the tube until the edge is sharp.
HOW TO CUT HOLES IN FOAM
8