Customized version of http://www.thingiverse.com/thing:114247

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=114247

Using the following options:

pin_cap_width = 4
ring_height = 6
center_radius = 12
pin_radius = 2.45
Build_Plate_Manual_Length = 100
pin_hole_radius = 3
pin_cap_gap = .45
ring_width = 5
font_depth = 2.5
ring_spacing = 2.5
Build_Plate_Type = 0
font = write/orbitron.dxf
ring_height_step = .5
mesh_resolution = 70
element = O
Build_Plate_Manual_Width = 100