X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=crossbar-computer-led-mount.scad;fp=crossbar-computer-led-mount.scad;h=c3fc8d18b72bc7b4a2bf6177060f5ed026a11838;hp=4bc474a38aaed7b2bd82fe25b3866e30c7217432;hb=c0e83a1044c76c82f1e694cf8e600a45bff680e1;hpb=4f92d46640259aabd3e3d1f8b404256e20511e49

diff --git a/crossbar-computer-led-mount.scad b/crossbar-computer-led-mount.scad
index 4bc474a..c3fc8d1 100644
--- a/crossbar-computer-led-mount.scad
+++ b/crossbar-computer-led-mount.scad
@@ -37,6 +37,9 @@ lid_wall_thick = 1.6;
 lid_slop = 0.75;
 base_ctie_anchor = 5;
 tube_ctie_anchor = 5;
+protrusion_size = 2;
+protrusion_none_frontback = 10;
+protrusion_slop = 0.5;
 
 //--- tests ---
 
@@ -86,6 +89,8 @@ base_width = 0.7 * crossbar_dia;
 base_backfront = backfront_mate_extra - tower_rearwall_y;
 base_height = led_tip_height_above_crossbar - tower_height_contribution;
 
+protrusion_frontback = base_backfront - protrusion_none_frontback;
+
 echo(tower_height_contribution, base_height);
 
 module TowerWallCrossSection(){
@@ -193,7 +198,9 @@ module Tower(){ ////toplevel
       cube([50, lidclamp_ctie_width, lidclamp_ctie_thick], center=true);
     translate([0,
 		(backfront_mate_extra+tower_rearwall_y)/2,
-		-tower_base_height/2])
+		-tower_base_height
+	       + max(protrusion_size + protrusion_slop + 0.1,
+		     base_ctie_anchor_eff)])
       cube([50, base_ctie_width, base_ctie_thick], center=true);
     for (mir=[0,1])
       mirror([mir,0,0]) {
@@ -203,6 +210,8 @@ module Tower(){ ////toplevel
 		cableclamp_ctie_width],
 	       center=true);
       }
+    translate([0, tower_rearwall_y, -tower_base_height])
+      BaseRegistrationProtrusion(protrusion_slop);
   }
 }
 
@@ -230,6 +239,18 @@ module LidT(){ ////toplevel
   rotate([180,0,0]) Lid();
 }
 
+module BaseRegistrationProtrusion(extra){
+  size = protrusion_size + extra;
+  translate([0, base_backfront/2, 0]){
+    hull(){
+      translate([0,0, -0.5])
+	cube([protrusion_size*2, protrusion_frontback, 1.0], center=true);
+      translate([0, 0, protrusion_size-0.5])
+	cube([0.05, protrusion_frontback-protrusion_size*2, 1.0], center=true);
+    }
+  }
+}
+
 module Base(){ ////toplevel
   difference(){
     mirror([0,0,1]){
@@ -248,6 +269,7 @@ module Base(){ ////toplevel
       rotate([-90,0,0])
       cylinder(r=crossbar_dia/2, h=101);
   }
+  BaseRegistrationProtrusion(0.0);
 }
 
 module BaseT(){ ////toplevel
@@ -265,8 +287,9 @@ module Demo(){
 //TowerWallFrontEdge();
 //TowerMainHull();
 //LidT();
-//Tower();
+Tower();
 //Lid();
+//BaseRegistrationProtrusion();
 //Base();
 //BaseT();
-Demo();
+//Demo();