diff --git a/follow_focus.py b/follow_focus.py
index 1b39bd8..f8f65a4 100644
--- a/follow_focus.py
+++ b/follow_focus.py
@@ -45,19 +45,19 @@ sg_teeth=            11
 # Other
 mount_gap=           2
 support_radius=      11/2
+end_y=               -4.3
 
 # Calculated values
 fastener_hole_depth = tab_height-2
 lid_thicknesss = (part_thinkness-gear_thinkness)/2
 gap = stepper_motor_size * math.sin(math.radians(slant_degree)) / math.sin(math.radians(90-slant_degree))
 width = math.sqrt(gap**2 + stepper_motor_size**2 - 2*gap*stepper_motor_size*math.cos(math.radians(90)))
-end_x=gap+stepper_motor_size-5
-end_y=-4.3
-outer_ring_diameter=rod_diameter+2*loop_width
-center_x=end_x-math.cos(math.radians(loop_angle))*outer_ring_diameter/2
-center_y=end_y-math.sin(math.radians(loop_angle))*outer_ring_diameter/2
+end_x = gap+stepper_motor_size-5
+outer_ring_diameter = rod_diameter+2*loop_width
+center_x = end_x-math.cos(math.radians(loop_angle))*outer_ring_diameter/2
+center_y = end_y-math.sin(math.radians(loop_angle))*outer_ring_diameter/2
 # Stepper motor mount points
-stepper_hole_radius=stepper_hole_width/2*math.sqrt(2)
+stepper_hole_radius = stepper_hole_width/2*math.sqrt(2)
 stepper_center = cq.Workplane('XY').lineTo(0, offset)\
                                    .polarLine(stepper_motor_size/2, 90-slant_degree)\
                                    .polarLine(stepper_motor_size/2, -slant_degree)\
@@ -71,8 +71,8 @@ b = e[1] - slope*e[0]
 support_y = end[1]-support_radius
 support_x = (support_y-b)/slope
 
-lg_x=support_x-stepper_center[0]
-lg_y=support_y-stepper_center[1]
+lg_x = support_x-stepper_center[0]
+lg_y = support_y-stepper_center[1]
 lg_radius = (math.sqrt(lg_x**2 + lg_y**2)-sg_teeth*mod/2)
 
 def findRodInter(n_x, n_y):