mudguard-bracket: maybe done?

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

diff --git a/mudguard-bracket.scad b/mudguard-bracket.scad
index 240e0ce35f834769902b8a93d97ffcc1af80fc8c..14360eecd70f9dc3220bac9ae47d15d0e1a273b8 100644 (file)
--- a/mudguard-bracket.scad
+++ b/mudguard-bracket.scad
@@ -59,6 +59,8 @@ tube_ctr_y = tube_dia/2;
 clamp_near_y = tube_ctr_y + tube_dia/2 - clamp_depth;
 clamp_far_y = tube_ctr_y + tube_dia/2 + clamp_main_th;
 
+buttress_x_ea = wing_top_ea_x + wings_main_th/2;
+
 wing_corners = [
 //             [ -wings_dist_x/2, wings_cup_z/2 ],
                [ wing_top_ea_x, 0 ],
@@ -154,8 +156,8 @@ module BracketButtressPlan(){
       rectfromto([ -wing_top_ea_x, -wings_height ],
                 [ +wing_top_ea_x, 0 ]);
     }
-    rectfromto([ -wing_top_ea_x + wings_main_th/2, -beam_th - retainer_th - retainer_big_gap ],
-              [ +wing_top_ea_x + wings_main_th/2, -beam_th ]);
+    rectfromto([ -buttress_x_ea, -beam_th - retainer_th - retainer_big_gap ],
+              [ +buttress_x_ea, -beam_th ]);
   }
 }