X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=mic-table-clamp.scad;h=25da147134f669bf9e7c8856265ecada28410221;hb=154535e123ff6248a03484379754daee27723ebf;hp=7ea877d83b9c8dbe6c3ccc3a3d14370b23eac972;hpb=a43c094e057b642144b632c52232454389a128b9;p=reprap-play.git

diff --git a/mic-table-clamp.scad b/mic-table-clamp.scad
index 7ea877d..25da147 100644
--- a/mic-table-clamp.scad
+++ b/mic-table-clamp.scad
@@ -1,7 +1,9 @@
 // -*- C -*-
 
-// print on High Detail
-// but adjust infill to 50%, shell thickness to 2mm
+// print Stem and Wingnut on High Detail
+// but adjust shell thickness to 2mm
+
+// others on Standard
 
 include <threads.scad>
 include <camera-mount.scad>
@@ -9,67 +11,86 @@ include <camera-mount.scad>
 positive_dia = inch * 3/8. - 0.375;
 positive_l = inch * 1/2.;
 
-stem_l = 7;
+stem_l = 40;
 stem_dia = 12;
-
-base_th = 3;
-base_dia = 60;
-
-module Base(){
-  translate([0,0,-0.1])
-    english_thread(diameter=positive_dia/inch, threads_per_inch=16,
-		   leadin=1, test=$test,
-		   length= (positive_l + 0.1) / inch);
-
-  rotate([180,0,0]) {
-    cylinder(r= stem_dia/2 * 1/(0.5 * sqrt(3)),
-	     h = stem_l + 1,
-	     $fn=6);
-    translate([0,0, stem_l])
-      cylinder(r= base_dia/2, h= base_th);
-  }
-}
+stem_th = 3;
+stem_ceil = 2;
+stem_base_th  = 4;
+stem_base_dia = 25;
+stem_inner_l = 30;
 
 thread_nom = 8;
-thread_act = thread_nom - 0.375;
+thread_pitch = 1.25;
+thread_act = thread_nom + 0.600;
 
 wingnut_th = 5;
 wingnut_wall = 4;
 wingnut_wing_mindia = 17.0;
-wingnut_wing_xrad = 5; // xxx 8;
+wingnut_wing_xrad = 8;
 wingnut_wing_xh = 5;
 wingnut_wing_th = 3;
 
-//$test= true;
-$test= false;
+$test= true;
+///$test= false;
 
-$fa= 3;
-$fs= 0.2;
+//$fa= 3;
+//$fs= 0.2;
 
 // calculated
 
 wingnut_cnr = wingnut_wing_th/2 -0.1;
 
-module Wingnut(){
+module OurThread(l){
+  translate([0,0,-0.01])
+    metric_thread(diameter=thread_act, pitch=thread_pitch,
+		  leadin=3, internal=true,
+		  test=$test, length=l);
+}
+
+module Stem(){ ////toplevel
+  translate([0,0, stem_l -0.1])
+    english_thread(diameter=positive_dia/inch, threads_per_inch=16,
+		   leadin=1, test=$test,
+		   length= (positive_l + 0.1) / inch);
+
+  difference(){
+    union(){
+      cylinder(r= stem_dia/2 * 1/(0.5 * sqrt(3)),
+	       h = stem_l,
+	       $fn=6);
+      cylinder(r= stem_base_dia/2,
+	       h = stem_base_th);
+    }
+    OurThread(stem_inner_l);
+  }
+}
+
+module Wingnut(){ ////toplevel
   difference(){
     union(){
       cylinder(r= (thread_nom+wingnut_wall)/2,
 	       h= wingnut_th);
-      linear_extrude(height= wingnut_wing_xh + wingnut_th)
-	offset(r= wingnut_cnr)
-	square([wingnut_wing_mindia + wingnut_wing_xrad*2 - wingnut_cnr*2,
-		wingnut_wing_th - wingnut_cnr*2],
-	       center=true);
+      minkowski(){
+	sphere(r= wingnut_cnr);
+	translate([0,0, wingnut_cnr*0.5])
+	  linear_extrude(height= wingnut_wing_xh + wingnut_th
+			 - wingnut_cnr*1.5)
+	  square([wingnut_wing_mindia + wingnut_wing_xrad*2 - wingnut_cnr*2,
+		  wingnut_wing_th - wingnut_cnr*2],
+		 center=true);
+      }
     }
     translate([0,0, wingnut_th])
       linear_extrude(height= wingnut_wing_xh+1)
       square(wingnut_wing_mindia, center=true);
     translate([0,0, wingnut_th])
       rotate([180,0,0])
-      translate([0,0,-0.01])
-      metric_thread(diameter=thread_act, leadin=3, internal=true,
-		    test=$test, length=wingnut_th+3);
+      OurThread(wingnut_th+3);
+    mirror([0,0,1])
+      linear_extrude(height=5)
+      square(center=true, wingnut_wing_mindia*2);
   }
 }
 
-Wingnut();
+//Wingnut();
+//Stem();