Vince looks like the Extrusion Multiplier setting in your Slicer app is too
high;
try setting it between 8.5 and 9.5... the extrusion beads should be overlapping
by about 5%-10%... Extruder temperature looks like it is also a tad too high....
Infill on the forward piece you can set fairly low at 15%, its not load
or stress bearing part, will print a lot faster.
The LAA Aft piece is a thin Shell model; it has no interior thickness (i.e its
not "watertight"), so printed as the stl is it could probably be crushed by hand
and is not optimised for 3D printing only CNC machining. Not surprised at all
to hear its breaking in the field.
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http://forums.matronics.com/viewtopic.php?p=510848#510848
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