Customized version of http://www.thingiverse.com/thing:128069

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=128069

Using the following options:

wall = 1.2
build_plate_manual_y = 100
build_plate_manual_x = 100
type = AAA
build_plate_selector = 0
cells = 3
custom_length = 3.2
space = 1.5
custom_diameter = 20