Summary

This is a nightmare for most printers. The torture test was designed for retraction and overhang angles, it gets progressively harder to print, and the Makerware tool path chronically fails at ~50% completion.

Makerware Print Specs
2 shells
0-8% infill
no support

Torture Test Level 9

Thanks to Neverdun for testing this file on his trusty flash forge.
Using Simplify3D for toolpath generation. The tool path is goofy to watch but it prints the full part.
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Simplify3D Print Specs
.2mm layer height
3 shells
20%infill
no support

220C extrude temp
4000mm/m print speed
4200mm/m rapids
.9 extrusion multiplier
1mm retraction distance
1200mm/m retraction speed