Instructor: Tobin Maginnis
Layer height: 0.1mm
First layer height: 0.2mm
Fill density: 0.25
(Do not check the 'Only retract when crossing perimeters', unless you download this printable upgrade: http://www.thingiverse.com/thing:26094
As long as you do not use this option, it is recommend that you also do not print with De-String/Retraction)
small perimeters: 30
External perimeters: 100
Solid infill: 60
Top solid infill: 50
Drag the STL file in Slic3r.
You can now move it around on your build platform, or rotate it. When you are done, click Export G-Code.
Another option is to go to File -> Quick Slice, and select the file you want. The same folder as where you got your STL from, now has the Gcode.
So first determine what file you want to slice, and how to slice it by changing the settings if necessary. Then click Quick Slice. Or drag the file in Slic3r and click Export G-code.