fix: losen tolerance for the extrusion because we are not going for a friction fit

cad/build.py

@@ -1,5 +1,4 @@
 # pyright: reportUnusedCallResult=false, reportWildcardImportFromLibrary=false
-from math import radians, sin
 from build123d import *
 
 def build_drive_shaft_mount():
@@ -7,7 +6,7 @@ def build_drive_shaft_mount():
     bearing_diameter = 22
     bearing_through_hole_diameter = 15
     bearing_height = 7
-    shaft_clearance_diameter = 25.5
+    shaft_clearance_diameter = 25
 
     core_width = 40
     thickness = 20
@@ -21,7 +20,7 @@ def build_drive_shaft_mount():
     screw_body_diameter = 5
 
     track_width = 6.2
-    track_height = 1.7
+    track_height = 1.8
 
     assert (bearing_offset - bearing_diameter / 2) > 0
     assert (core_width - bearing_diameter) > 0
@@ -83,10 +82,7 @@ def build_drive_shaft_mount():
                 Triangle(A=90, b=1, c=1)
             extrude(amount=-((thickness / 2) + (bearing_height / 2)), mode=Mode.SUBTRACT)
 
-        with BuildPart() as track:
+        Box(core_width + (screw_blocks_width * 2), track_width, track_height, (90, 0, 0), (Align.CENTER, Align.CENTER, Align.MIN))
-            angle = 30
-            Box(core_width + (screw_blocks_width * 2), track_width + ((sin(radians(angle))/sin(radians(90-angle))) * track_height * 2), track_height, (90, 0, 0), (Align.CENTER, Align.CENTER, Align.MIN))
-            chamfer(track.edges().filter_by(Axis.X).sort_by(Axis.Y)[:2], track_height - 0.01, angle=angle)
 
         with Locations(drive_shaft_mount.faces().filter_by(Plane.XZ).sort_by(Axis.Y)[-2:]):
             CounterBoreHole(screw_body_diameter / 2, screw_head_diameter / 2, screw_head_depth)
@@ -94,7 +90,7 @@ def build_drive_shaft_mount():
     return drive_shaft_mount
 
 def build_drive_shaft_bar_adapter():
-    ext_size = 20.3
+    ext_size = 20.2
     ext_track_width = 6.2
     ext_track_height = 1.8
 
@@ -102,8 +98,6 @@ def build_drive_shaft_bar_adapter():
     thickness = 10
 
     ext_screw_hole_diam = 6
-    ext_screw_hole_head_diam = 10.5
-    ext_screw_hole_head_depth = 1
     ext_screw_hole_offset = 10
 
     shaft_hub_bore_diam = 8
@@ -133,9 +127,9 @@ def build_drive_shaft_bar_adapter():
             with BuildPart(screws_origin, mode=Mode.SUBTRACT) as ext_track_cut_out:
                 Box(ext_size, ext_size, ext_screw_hole_diam + 8)
                 chamfer(ext_track_cut_out.edges(), 3)
-            with PolarLocations((ext_size / 2) + thickness, 4):
+            with PolarLocations(0, 4):
                 with Locations(Rotation(0, 90, 0)):
-                    CounterBoreHole(ext_screw_hole_diam / 2, ext_screw_hole_head_diam / 2, ext_screw_hole_head_depth)
+                    Hole(ext_screw_hole_diam / 2)
 
         # shaft interface
         with Locations(drive_shaft_bar_adapter.faces().filter_by(Plane.XY).sort_by(Axis.Z)[1].offset(shaft_hub_screw_head_depth)):