Customized version of http://www.thingiverse.com/thing:54024

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=54024

Using the following options:

CapType = 2
Knurled = 1
HoleDepth = 20
ShaftDiameter = 11.7
TaperPercentage = 10
KnobDiameter = 28.8
HoleFlatThickness = 2
RingWidth = 0
KnobHeight = 20
ScrewHoleDiameter = 0
NotchedShaft = 0
RingMarkings = 1
TimerKnob = 0
HoleDiameter = 6
Pointer2 = 1
Pointer1 = 1
ShaftLength = 24