diff --git a/follow_focus.py b/follow_focus.py
index 04bae4f..1d7b0c4 100644
--- a/follow_focus.py
+++ b/follow_focus.py
@@ -50,6 +50,7 @@ sg_teeth=            11
 mount_gap=           2
 support_radius=      11/2
 end_y=               -4.3
+hack_num=            0.000001             
 
 # Calculated values
 fastener_hole_depth = tab_height-2
@@ -157,7 +158,7 @@ lid = lid.cut(base)
 copy = lid.faces('>>Z[0]').workplane().vLine(-offset-wall_width, forConstruction=True).polarLine(stepper_motor_size*2, slant_degree)\
                                       .polarLine(-2*stepper_motor_size, 90+slant_degree)\
                                       .hLine(-3*stepper_motor_size).close().cutThruAll()
-lid = lid.faces('>Z[0]').shell(.000001-wall_width)
+lid = lid.faces('>Z[0]').shell(-wall_width+hack_num, kind='arc')
 lid = lid.add(copy)
 
 lid = lid.faces('>Z[1]').workplane().center(stepper_center[0], -stepper_center[1])\
@@ -165,9 +166,10 @@ lid = lid.faces('>Z[1]').workplane().center(stepper_center[0], -stepper_center[1
 lid = lid.faces('>Z[0]').workplane().circle(5/2).cutThruAll()
 
 base = base.faces('<Z[1]').workplane().center(lg_x, lg_y).circle(lg_radius+2*mod).cutBlind(-gear_thinkness-gear_gap)
-base = base.faces('<Z[2]').workplane().hLine(support_radius, forConstruction=True)\
-                                      .threePointArc((-support_radius,-support_radius/2),(0,support_radius))\
-                                      .polarLine(support_radius, -slant_degree)\
+base = base.faces('<Z[2]').workplane().circle(support_radius).extrude(-lid_thicknesss+wall_width)
+base = base.faces('<Z[2]').workplane().vLine(support_radius-wall_width/2)\
+                                      .hLine(support_radius)\
+                                      .polarLine(support_radius, 270-slant_degree)\
                                       .close().extrude(-lid_thicknesss+wall_width)
 base = base.faces('<Z[2]').workplane().circle(large_gear_diameter/2-gear_offset).extrude(gear_thinkness/2)
 base = base.faces('<Z[2]').workplane().circle(m3_tap/2).cutBlind(-part_thinkness/2+wall_width)
@@ -191,11 +193,12 @@ fastener = fastener.faces('<<Y[-1]').center(fastener_length,0)\
 fastener = fastener.faces('<<Y[-6]').workplane().circle(5/2).cutThruAll()
 
 # Lid large gear mount point
-lid = lid.faces('>Z[0]').workplane().center(lg_x,-lg_y)\
-                                    .hLine(support_radius, forConstruction=True)\
-                                    .threePointArc((-support_radius, support_radius/2),(0,-support_radius))\
-                                    .polarLine(support_radius, slant_degree)\
-                                    .close().extrude(-lid_thicknesss+wall_width)
+lid = lid.faces('>Z[0]').workplane().center(lg_x+hack_num,-lg_y)\
+                                    .circle(support_radius).extrude(-lid_thicknesss+wall_width)
+lid = lid.faces('>Z[0]').workplane().center(-hack_num, 0).vLine(-support_radius+wall_width/2)\
+                                                       .hLine(support_radius)\
+                                                       .polarLine(-support_radius, 270+slant_degree)\
+                                                       .close().extrude(-lid_thicknesss+wall_width)
 lid = lid.faces('>Z[0]').workplane().circle(large_gear_diameter/2-gear_offset).extrude(gear_thinkness/2)
 lid = lid.faces('>Z[0]').workplane().circle(2).cutThruAll()
 lid = lid.faces('<Z[0]').workplane().circle(m3_head_diameter/2).cutBlind(-m3_head_depth)