Customized version of http://www.thingiverse.com/thing:27468

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=27468

Using the following options:

plate_thickness = 3
show_target = 1
freeArmStay_Offset = 32
freeArmStay_pos_l = [(freeArmStay_Offsetcos(30)),grip_offset-((freeArmStay_Offsetsin(30)))-arm_length,0]
freeArmStay_pos_r = [(freeArmStay_Offsetcos(30)),-grip_offset+((freeArmStay_Offsetsin(30)))+arm_length,0]
arm_length = 46
target_side = 50
assembly = 4
Gear_Play = 0.2
Screw_Size = 3
Grip_pos_r = [(arm_lengthsin(Rot/2)),-grip_offset+(arm_length(1-cos(Rot/2))),-arm_thickness-0.3]
Grip_pos_l = [(arm_lengthsin(Rot/2)),grip_offset-(arm_length(1-cos(Rot/2))),-arm_thickness-0.3]
Rot = 0
Gear_Pitch = 400
hide_coverplate = 1
arm_width = 8
Gear_Stages = 0
Screw_play = 0.1
target_translation = 110
Gear_Teeth = 10
hand_length = 30
arm_thickness = 5
gear_pos_small_r2 = [0,-(Small_Gear_rad+Gear_Play/2)3,0]
gear_pos_small_r1 = [0,-(Small_Gear_rad+Gear_Play/2),0]
GripPlate_height = 15
GripPlate_pos_r = [(arm_lengthsin(Rot/2))+(freeArmStay_Offsetcos(grip_angle))+(hand_length),-grip_offset+(arm_length(1-cos(Rot/2)))+(freeArmStay_Offset(sin(grip_angle))),0]
GripPlate_pos_l = [(arm_lengthsin(Rot/2))+(freeArmStay_Offsetcos(grip_angle))+(hand_length),grip_offset-(arm_length(1-cos(Rot/2)))+(freeArmStay_Offset(-sin(grip_angle))),0]
gear_pos_small_l2 = [0,(Small_Gear_rad+Gear_Play/2)3,0]
gear_pos_small_l1 = [0,(Small_Gear_rad+Gear_Play/2),Gear_thickness]
gear_pos_large_l = [0,Arm_Gear_Pos,0]
gear_pos_large_r = [0,-Arm_Gear_Pos,0]