Customized version of http://www.thingiverse.com/thing:1657791

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=1657791

Using the following options:

XCount = 3
Rotation = 45
SuperEllipsePower = 1.5
Diameter = 18
SineCutoutHeight = 1.5
GenerateBaseSupport = no
WallThickness = 2
YCount = 3
Height = 30
YDistance = 25
XDistance = 24
SupportHeight = 5
SupportDistance = 0.25
FlatBottom = yes