X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=osstest-arm-net-bracket.scad;h=f3b12c538b588435b1f9ba8637d250fe7c98d416;hb=5e0f96fea325e036039354751074260592fd6acc;hp=8d022bd726606e4f17e024f76580ccac0bf4d90f;hpb=b0cfa551e18aaef1a46d673962724d6280a5f275;p=reprap-play.git

diff --git a/osstest-arm-net-bracket.scad b/osstest-arm-net-bracket.scad
index 8d022bd..f3b12c5 100644
--- a/osstest-arm-net-bracket.scad
+++ b/osstest-arm-net-bracket.scad
@@ -5,11 +5,12 @@ tonguewidth = 10;
 tongue2width = 15;
 totaldepth = 26;
 tongue2depth = 35;
-thick = 3;
-tabover = 7;
+thick = 4;
+tabover = 7+6;
 tabunder = 15;
 
-tabside = 7;
+tabsidel = 7;
+tabsider = 7+10;
 
 tonguethick = 4;
 tongue2thick = 5;
@@ -17,32 +18,67 @@ strapthick = 2;
 strapwidth = 5;
 ridgewidth = 2;
 
+hstrengthick = 2.5;
+hstrengdepth = strapwidth;
+
+cutoutover = 7;
+rcutoutside = 7+2 - 0.5;
+lcutoutside = 7-6.5 - 0.5;
+
+t2strengwidth = 10;
+
 holedia = 3.5;
 
 tongue2x = tongue2width - holedist;
 
-module Tongue(tw,tt,ad){
+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 (y=[thick+0.1, ad-ridgewidth-strapwidth])
-      translate([-tw-1, y, tt])
-	cube([tw+2, strapwidth, strapthick+1]);
+    union(){
+      translate([-tw, 0, 0])
+	cube([tw, ad, tt+strapthick]);
+      child();
+    }
+    for (yi=[1:slots-1])
+      translate([-tw-1, y0 + (yn-y0)*yi/(slots-1), tt])
+	cube([tw+2, strapwidth, strapthick+0.05]);
   }
 }
 
 module Object(){
   difference(){
-    translate([-holedist-tabside, 0, 0])
-      cube([tabside*2+holedist, thick, tabunder+tabover]);
+    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, -1, tabunder])
-	rotate([-90,0,0])
-	cylinder(r= holedia/2+0.5, h=thick+2, $fn=20);
+      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);
+  Tongue(tonguewidth,tonguethick,totaldepth,3);
   translate([tongue2x,0,0])
-    Tongue(tongue2width,tongue2thick,tongue2depth+thick);
+    Tongue(tongue2width,tongue2thick,tongue2depth+thick,5) {
+    hull(){
+      translate([-(tongue2width-t2strengwidth)/2, 0,0])
+	mirror([1,0,0])
+	cube([t2strengwidth,50,20]);
+    }
+  }
 }
 
 Object();