From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 5 Nov 2022 00:23:25 +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=49cd5b1fb21c76e3f464ad7190564833e9a3284b;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 0c31b16..82c3a8a 100644
--- a/topeak-mtx-tortec-expeditionrack-adapter.scad
+++ b/topeak-mtx-tortec-expeditionrack-adapter.scad
@@ -62,6 +62,18 @@ module BlockElevation(){
 	     [ -block_x, block_y_min ]);
 }
 
+module MainExtrude(){
+  linextr(0, main_sz_z)
+    children();
+}
+module RackShear(){
+  multmatrix([ [ 1, 0,   0, 0 ],
+	       [ 0, 1, 0.1, 0 ],
+	       [ 0, 0,   1, 0 ],
+	       [ 0, 0,   0, 1 ] ])
+    children();
+}
+
 module GraspFixingElevation(){
   intersection(){
     union(){
@@ -99,14 +111,16 @@ module Principal(){
 
   difference(){
     union(){
-      linextr(0, main_sz_z){
+      MainExtrude(){
 	GraspElevation();
 	BlockElevation();
+      }
+      RackShear() MainExtrude(){
 	StrapBarrelElevation();
       }
 
       difference(){
-	linextr(0, main_sz_z){
+	RackShear() MainExtrude(){
 	  GraspFixingElevation();
 	}
 
@@ -117,7 +131,7 @@ module Principal(){
       }
     }
 
-    linextr(-10, main_sz_z+10) {
+    RackShear() linextr(-10, main_sz_z+10) {
       for (mx=[0,1]) {
 	mirror([mx,0]) {
 	  translate([ rack_rail_x, $rack_rail_y ]){