From 971e06d134e9f34ef5f09fc8d7f8f1ccadde4094 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 21 Jan 2018 19:40:14 +0000
Subject: [PATCH] fairphone-case: wip hinge, rename Hinger to Lever (nfc)

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 fairphone-case.scad | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

diff --git a/fairphone-case.scad b/fairphone-case.scad
index da109ff..c3350fa 100644
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -59,11 +59,11 @@ lid_gap_z = 0.25;
 lid_lip = 1.75;
 
 foldover_gap = 0.50;
-foldover_hinger_gap = 0.50;
+foldover_lever_gap = 0.50;
 
 hingescrew_shaft_dia = 2.0 + 0.25; // M2 x 12mm machine screw
 hingescrew_nut_dia = 4.72 + 0.50; // washer, actually
-hinger_th = 2;
+lever_cover_th = 0.75;
 hingemount_th = 2.5;
 
 $fa = 5;
@@ -132,7 +132,7 @@ bppJ = [ bppN[0], bppL[1] ];
 
 // hinge plan
 hp_rn = hingescrew_nut_dia/2;
-hp_r2 = hp_rn + hinger_th;
+hp_r2 = hp_rn + lever_cover_th;
 hp_rs = hingescrew_shaft_dia/2;
 hp_r1 = hp_rs + hingemount_th;
 
@@ -140,7 +140,7 @@ hppU = lpp13;
 hppS = epp2o + [0,-1] * case_th_bottom;
 hp_k = 0.5 * (hppU[1] - hppS[1] + foldover_gap);
 
-hppM = [ epp4[0] - foldover_hinger_gap - hp_r2,
+hppM = [ epp4[0] - foldover_lever_gap - hp_r2,
 	 0.5 * (hppU + hppS)[1] ];
 hppT = hppM + 0.5 * [0,+1] * hp_k;
 hppB = hppM + 0.5 * [0,-1] * hp_k;
@@ -401,6 +401,23 @@ module HingeBaseProfile(){
   }
 }
 
+module HingeLeverOuterProfile(){
+  hull(){
+    circleat(hppT, hp_r2);
+    circleat(hppB, hp_r2);
+  }
+}
+
+module HingeLeverInnerProfile(){
+  for (c = [hppT, hppB]) {
+    hull()
+      for (x=[0,20])
+	translate([x,0])
+	  circleat(c, hp_rn);
+	circleat(hppB, hp_rn);
+  }
+}
+
 module CaseBase(){
   AroundEdges(epp3[1], case_th_bottom, 1)
     EdgeProfile();
@@ -665,6 +682,8 @@ module DemoProfiles(){ ////toplevel
     %EdgeProfile();
     color("blue") HingeLidProfile();
     color("red")  HingeBaseProfile();
+    color("black") translate([0,0,-2]) HingeLeverOuterProfile();
+    color("orange") translate([0,0,-1]) HingeLeverInnerProfile();
   }
 }
 
-- 
2.30.2