From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Fri, 4 Nov 2022 23:45:53 +0000 (+0000)
Subject: topeak-mtx-tortec-expeditionrack-adapter: wip
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=3a66633983f8d1246a4c22f477a56cc770393b59;p=reprap-play.git

topeak-mtx-tortec-expeditionrack-adapter: wip

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

diff --git a/topeak-mtx-tortec-expeditionrack-adapter.scad b/topeak-mtx-tortec-expeditionrack-adapter.scad
index 2622b17..a66207a 100644
--- a/topeak-mtx-tortec-expeditionrack-adapter.scad
+++ b/topeak-mtx-tortec-expeditionrack-adapter.scad
@@ -26,8 +26,8 @@ brk_bottom_y = -brk_recess_actual;
 adapt_main_top_y = brk_bottom_y + general_gap_y;
 
 // on LHS, so -ve
-rack_rail_x = -(rack_width_inner + rack_rail_dia/2);
-rack_rail_outer_x = -(rack_width_inner + rack_rail_dia);
+rack_rail_x = -(rack_width_inner/2 + rack_rail_dia/2);
+rack_rail_outer_x = -(rack_width_inner/2 + rack_rail_dia);
 
 grasp_large_r = (rack_rail_dia + grasp_sz)/2;
 grasp_large_x = rack_rail_outer_x + grasp_large_r;
@@ -45,6 +45,11 @@ module GraspElevation(){
   }
 }
 
+module BlockElevation(){
+  rectfromto([ -rack_width_inner/2, adapt_main_top_y ],
+	     [ +rack_width_inner/2, adapt_main_top_y - main_sz_y ]);
+}
+
 module Principal(){
   // calculated
   $rack_rail_y = brk_bottom_y - $elevation_nominal
@@ -53,16 +58,22 @@ module Principal(){
   difference(){
     linextr(0, main_sz_z){
       GraspElevation();
+      BlockElevation();
+      mirror([1,0]) GraspElevation();
     }
 
     linextr(-10, main_sz_z+10) {
-      translate([ rack_rail_x, $rack_rail_y ]){
-	hull(){
-	  for (dx = [-rack_rail_dia, 0])
-	    translate([dx, 0])
-	      circle(r= rack_rail_dia/2);
+      for (mx=[0,1]) {
+	mirror([mx,0]) {
+	  translate([ rack_rail_x, $rack_rail_y ]){
+	    hull(){
+	      for (dx = [-rack_rail_dia, 0])
+		translate([dx, 0])
+		  circle(r= rack_rail_dia/2);
+	    }
+	  }
 	}
-      }    
+      }
     }
   }
 }