X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=osstest-arm-net-bracket.scad;h=75ae6f5a8033bd17ffb0116b93698504bfc868b1;hp=19bfcbef2549b4eb2a45937687cde93d8f71854d;hb=f5f27620358925730f9ad54515c83bc094eea558;hpb=8987326e9a4aaf83e1d13f3a673fff8329b807a6

diff --git a/osstest-arm-net-bracket.scad b/osstest-arm-net-bracket.scad
index 19bfcbe..75ae6f5 100644
--- a/osstest-arm-net-bracket.scad
+++ b/osstest-arm-net-bracket.scad
@@ -2,28 +2,72 @@
 
 holedist = 64;
 tonguewidth = 10;
+tongue2width = 15;
 totaldepth = 26;
-thick = 3;
-tabover = 7;
-tabunder = 20;
+tongue2depth = 35;
+thick = 4;
+tabover = 7+6;
+tabunder = 15;
 
-tabside = 7;
+tabsidel = 7;
+tabsider = 7+10;
 
 tonguethick = 4;
+tongue2thick = 5;
 strapthick = 2;
 strapwidth = 5;
 ridgewidth = 2;
 
+hstrengthick = 2.5;
+hstrengdepth = strapwidth;
+
+cutoutover = 7;
+rcutoutside = 7+2 - 0.5;
+lcutoutside = 7-6.5 - 0.5;
+
+holedia = 3.5;
+
+tongue2x = tongue2width - holedist;
+
+module Tongue(tw,tt,ad,slots=2){
+  y0=thick+0.1;
+  yn=ad-ridgewidth-strapwidth;
+  difference(){
+    translate([-tw, 0, 0])
+      cube([tw, ad, tt+strapthick]);
+    for (yi=[1:slots-1])
+      translate([-tw-1, y0 + (yn-y0)*yi/(slots-1), tt])
+	cube([tw+2, strapwidth, strapthick+1]);
+  }
+}
+
 module Object(){
-  translate([-holedist-tabside, 0, 0])
-    cube([tabside*2+holedist, thick, tabunder+tabover]);
   difference(){
-    translate([-tonguewidth, 0, 0])
-      cube([tonguewidth, totaldepth, tonguethick+strapthick]);
-    for (y=[thick+0.1, totaldepth-ridgewidth-strapwidth])
-      translate([-tonguewidth-1, y, tonguethick])
-	cube([tonguewidth+2, strapwidth, strapthick+1]);
+    translate([-holedist-tabsider, 0, 0]) {
+      cube([tabsidel+tabsider+holedist, thick, tabunder+tabover]);
+      cube([tabsidel+tabsider+holedist, thick+hstrengdepth, hstrengthick]);
+    }
+    translate([0,-25,tabunder+cutoutover]) {
+      translate([-(holedist+rcutoutside), 0,0])
+	mirror([1,0,0])
+	cube([50,50,50]);
+      translate([lcutoutside, 0,0])
+	cube([50,50,50]);
+    }
+    for (x=[-holedist,0])
+      translate([x, 0, tabunder]) {
+	translate([0, -1, 0]) {
+	  rotate([-90,0,0]) {
+	    cylinder(r= holedia/2+0.5, h=thick+2, $fn=20);
+	  }
+	}
+	translate([0, 19.95 + thick, 0])
+	  cube(center=true,[10,40,10]);
+      }
   }
+  Tongue(tonguewidth,tonguethick,totaldepth,3);
+  translate([tongue2x,0,0])
+    Tongue(tongue2width,tongue2thick,tongue2depth+thick,5);
 }
 
 Object();