How to configure Slic3r to use less plastic.

I got an email recently asking about all the various options in Slic3r, the awesome gcode generator by Alessandro Ranellucci. Specifically, my friend wanted to know how to configure Slic3r so that his 3D prints would use much less plastic.


This is a companion discussion topic for the original entry at https://reprage.com/post/31261415742/how-to-configure-slic3r-to-use-less-plastic