X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=topeak-mtx-tortec-expeditionrack-adapter.scad;h=c751f787081e7e3baf778d42e8c49eed23ff140d;hb=refs%2Fheads%2Fmaster;hp=41abc4b2790f0e1540cb005797bbfe739953ca6a;hpb=22bd2adef795a1e32086cfdb8088a15a95e3b0b7;p=reprap-play.git

diff --git a/topeak-mtx-tortec-expeditionrack-adapter.scad b/topeak-mtx-tortec-expeditionrack-adapter.scad
index 41abc4b..c751f78 100644
--- a/topeak-mtx-tortec-expeditionrack-adapter.scad
+++ b/topeak-mtx-tortec-expeditionrack-adapter.scad
@@ -20,7 +20,7 @@ rear_elevation_nominal = 10.04;
 rear_to_front_distance = 230; // rack cross rail (fam) to very front end
 rear_to_cross_rail = 43.05; // bolt centre to rail centre, rail to rear
 rear_bolt_to_front_bolt = 155.4;
-front_elevation_nominal = 0;
+front_elevation_nominal = 0; // this parameter adjusts rear too somehow?
 
 cross_rail_distance = 232.09;
 
@@ -258,22 +258,30 @@ module FamLinextr(){
 }
 
 module FamGraspElevation(){
-  hull(){
-    ybot = $rack_rail_y - rack_rail_dia/2 + grasp_large_r
-      - fit_slope_len * 0.5;
-    for (y = [
-	      ybot,
-	      adapt_main_top_y - grasp_large_r
-	      ])
-      for (dx= [/*-1,*/ +1] * rack_rail_dia/2)
-	translate([ -$foreaftmaint_rail_z + dx, y ])
-	  circle(r= grasp_large_r);
+  difference(){
+    hull(){
+      ybot = $rack_rail_y - rack_rail_dia/2 + grasp_large_r
+	- fit_slope_len * 0.5;
+      for (y = [
+		ybot,
+		adapt_main_top_y - grasp_large_r
+		])
+	for (dx= [/*-1,*/ +1] * rack_rail_dia/2)
+	  translate([ -$foreaftmaint_rail_z + dx, y ])
+	    circle(r= grasp_large_r);
+    }
+    if ($foreaftmaint_cutoff) {
+      translate([ -$foreaftmaint_rail_z, 0 ])
+	rectfromto([-100, -100],
+		   [0, 100]);
+    }
   }
 }
 
 module FamStemElevation(){
   hull(){
-    rectfromto([ -$foreaftmaint_rail_z, adapt_main_top_y ],
+    rectfromto([ -$foreaftmaint_rail_z
+		 , adapt_main_top_y ],
 	       [ 0, block_y_min]);
     translate([
 	       -$foreaftmaint_rail_z,
@@ -446,6 +454,7 @@ module Front(){ ////toplevel
   rotate([180,0,0])
   Principal($reverse_sign = -1,
 	    $foreaftmaint_top_block = false,
+	    $foreaftmaint_cutoff = true,
 	    $elevation_nominal=
       elevation_of_bolt_for(rear_to_cross_rail + rear_bolt_to_front_bolt),
 	    $foreaftmaint_dz= front_to_cross_rail);
@@ -454,6 +463,7 @@ module Front(){ ////toplevel
 module Rear(){ ////toplevel
   Principal($reverse_sign = +1,
 	    $foreaftmaint_top_block = true,
+	    $foreaftmaint_cutoff = false,
 	    $elevation_nominal=
       elevation_of_bolt_for(rear_to_cross_rail),
 	    $foreaftmaint_dz= rear_to_cross_rail);