My simplified model based (loosely) on Bodiam Castle. http://svenart.deviantart.com/art/Bodiam-Castle-254468827?offset=40

My intent was to make a model which can be scaled on the smaller side. and capture the feel of the original.

The castbod5.stl print came out a bit rough on the small square tower tops.
I remodeled and have posted castbod6.stl.

the changes are the following
the 4 square towers have thicker top sections.
the inner top of the wall is thicker
the 2 big square towers have flatter tines.
I added more "windows" to the outer walls.
the tops of the round towers have a ring.
I test printed the second version using these settings.
.27 slice
80mm/sec (replicator accelerated marlin)
230 degrees extruder
0% infill
1 shell
its a very light weight print for how big it is (65 grams)