I think this was printed in eSUN PLA+. You can leave off the bottom layers and just go straight to infill if you want to use an infill pattern for more visual interest.
=====
Printers
=====
* Heavily-modified 8" dual-extruder machine that started its life as a MakerFarm i3v. Most of the parts on it have been replaced with improved versions.
* Large format machine similar to a C-Bot.
=====
Materials:
====...