This is a Trireme hull upgrade for the Modular Snap-Fit Airship: http://www.thingiverse.com/thing:45295. It is currently available in a shell version but I am working on a solid version as well. The Airship Trieme upgrade has been prototyped on a Replicator 2. It has been designed for printing without supports or rafts and prototyped as such. Sliced in skeinforge it works best with the following settings in print-o-matic:no support/raft layer thickness: .15mm (or less) Number of shells: 1 or 2 feed speed: 80mm/s travel speed: 150mm/s fill rate: 0 (for shell version)My actual slice profile is a little more complex but with print-o-matic those are the settings that will get you started. This shell version was designed to keep the material use to a minimum and works quite well but I am working on a solid version anyway. It might actually print faster at low rates of infill because there is less shell and perimeter to print even though they have been minimized in the shell version.This model replaces one of the hull sections of my Modular Snap-Fit Airship found here: http://www.thingiverse.com/thing:45295 converting it into an Airship Trireme!This is a work in progress for an art series I am working on so for the moment I licensed it as no-derivatives but I will open it up soon after I finish a few more parts.