From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Mon, 13 Apr 2020 14:32:55 +0000 (+0100)
Subject: mic-camera-adapter: many adjustments
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=aad03d4bd1e3d36a0cacd77b413c26e9a3e5d6f0;p=reprap-play.git

mic-camera-adapter: many adjustments

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/mic-camera-adapter.scad b/mic-camera-adapter.scad
index 4258416..9c01cc4 100644
--- a/mic-camera-adapter.scad
+++ b/mic-camera-adapter.scad
@@ -13,8 +13,16 @@ negative_l =   10.0;
 negative_wall = 4;
 midsection = 4;
 
-$test = true;
-//$test = false;
+spanner = 12;
+
+negative_tpi = 20;
+negative_pitch = inch/negative_tpi;
+negative_chamfer = negative_pitch/2;
+
+//$test = true;
+$test = false;
+$fs=0.1;
+$fa=5;
 
 module Adapter(){
   translate([0,0,-0.1])
@@ -23,12 +31,24 @@ module Adapter(){
 		   length= (positive_l + 0.1) / inch);
   rotate([180,0,0]) {
     difference(){
-      cylinder(r= negative_dia/2 + negative_wall,
-	       h = negative_l + midsection);
+      cylinder(r= spanner/2 * 1/(0.5 * sqrt(3)),
+	       h = negative_l + midsection,
+	       $fn=6);
       translate([0,0, midsection])
-	english_thread(diameter=negative_dia/inch, threads_per_inch=20,
-		       leadin=0, internal=true, test=$test,
+	english_thread(diameter=negative_dia/inch,
+		       threads_per_inch=negative_tpi,
+		       leadin=1, internal=true, test=$test,
 		       length= (negative_l + inch/19) / inch);
+      translate([0,0, midsection+negative_l]) {
+	hull(){
+	  translate([0,0, negative_chamfer])
+	    cylinder(r= negative_dia/2 + negative_chamfer*2,
+		     h=1);
+	  mirror([0,0,1])
+	    cylinder(r= negative_dia/2 - negative_chamfer*2,
+		     h= negative_chamfer*3);
+	}
+      }
     }
   }
 }