From 175578ddd0124e43e2472ff328043048607dd4de Mon Sep 17 00:00:00 2001
From: Christian Colglazier <christian@cacolglazier.com>
Date: Sat, 21 May 2022 19:03:24 -0400
Subject: [PATCH] Thickened loop

---
 follow_focus.py | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/follow_focus.py b/follow_focus.py
index e49018f..0bf4c23 100644
--- a/follow_focus.py
+++ b/follow_focus.py
@@ -18,22 +18,25 @@ fastener_height = 3.5
 fastener_length = 20
 
 # NEMA 17 stepper motor
-stepper_motor_size=42
+stepper_motor_size=42.0
+stepper_hole_width=31.0
 
 # Case
+part_thinkness=20
+
 slant_degree=15.0
-thickness=20
 rod_thickness=15.2
-loop_thickness=1.5
+loop_thickness=1.6
+angle=40
 wall_width=1.6
 lid_thicknesss = 5
-
 offset=9
-part_thinkness=20
-gear_thinkness=10
-large_gear_diameter=8.5
+gear_gap=0.2
 
 
+large_gear_diameter=8.5
+gear_thinkness=10
+
 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)))
 
@@ -42,12 +45,12 @@ t=7
 mount_gap=2
 
 end_x=gap+stepper_motor_size-5
-end_y=-4.5
-angle=40
+end_y=-4.3
+
 outer_ring_diameter=rod_thickness+2*loop_thickness
 center_x=end_x-math.cos(math.radians(angle))*outer_ring_diameter/2
 center_y=end_y-math.sin(math.radians(angle))*outer_ring_diameter/2
-gear_gap=0.2
+
 
 def findRodInter(n_x, n_y):
     p = Point(center_x, center_y)
@@ -98,7 +101,6 @@ base = base.add(copy)
 base = base.faces('<<Z[0]').workplane().center(0, offset+loop_thickness).polarLine(stepper_motor_size, -slant_degree).polarLine(stepper_motor_size, -slant_degree-3.75).vLine(2*stepper_motor_size).hLine(-2*stepper_motor_size).close().cutBlind(-lid_thicknesss)
 
 # Stepper motor mount points
-stepper_hole_width=31.0
 stepper_hole_radius=stepper_hole_width/2*math.sqrt(2)
 stepper_center = cq.Workplane('XY').center(0, -offset-loop_thickness).lineTo(0, offset).polarLine(stepper_motor_size/2, 90-slant_degree).polarLine(stepper_motor_size/2, -slant_degree).val().endPoint().toTuple()
 base = base.faces('>>Z[0]').workplane().center(stepper_center[0], -stepper_center[1]).circle(22.5/2).pushPoints([(stepper_hole_radius*math.cos(math.radians(45+slant_degree)),stepper_hole_radius*math.sin(math.radians(45+slant_degree))), (stepper_hole_radius*math.cos(math.radians(135+slant_degree)),stepper_hole_radius*math.sin(math.radians(135+slant_degree))),(stepper_hole_radius*math.cos(math.radians(225+slant_degree)),stepper_hole_radius*math.sin(math.radians(225+slant_degree))),(stepper_hole_radius*math.cos(math.radians(315+slant_degree)),stepper_hole_radius*math.sin(math.radians(315+slant_degree)))]).circle(3/2).cutBlind(-wall_width)