Customized version of http://www.thingiverse.com/thing:182621

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=182621

Using the following options:

peg_height = 15
Y_pegs = 10
step_percent = 56
peg_thickness = 4
step_width = 0
X_pegs = 10
base_thickness = 5
base_size = 191