Customized version of http://www.thingiverse.com/thing:91035
Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=91035

Using the following options:
Handle_Length = 80
Drill_Bit_Diameter = 8
Set_Screw_Nut_Thickness = 3
Set_Screw_Diameter = 3
Drill_Bit_Length = 30
Drill_Bit_Diameter_Units = 1
Resolution = 25
Number_of_Nut_Traps = 2
Handle_Diameter = 15
Set_Screw_Nut_Diameter = 5.5