.....Paint a thin coat of epoxy over the area to be filled. Dry micro
is then lumped over the area. The fill must be high, such that
material is sanded away to bring the area into contour. The micro
should be mixed very dry (lots of microspheres) to save weight. Let
the micro cure at least 24 hours. Sand the micro overfill into
contour using a hard sanding block, or spline with coarse (36 to 60-
grit) sandpaper. Exercise extreme caution while sanding. A few
careless strokes with coarse paper can ruin your structure!
STEP THREE: FEATHER FILL
..... Sand the surfaces lightly by hand or with a soft foam sanding
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