Customized version of http://www.thingiverse.com/thing:2318105

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=2318105

Using the following options:

$fn = 300
slot_width = 2.5
slot_length = 6
text_depth = 1
slot_depth = 2.8
mode = single
clearances = [0.15, 0.2, 0.25, 0.3, 0.35,0.4,0.45]
text_size = 4.0
crosscut_angle = 0
text_font = Helvetica:black