powerbank-bike-clamp: over strap

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

diff --git a/powerbank-bike-clamp.scad b/powerbank-bike-clamp.scad
index 0759bd2de645dea4b1ca728ab4daa0addf522c56..b2a03a280acb4068e3b17bd6c0a53e2fa3cfb75e 100644 (file)
--- a/powerbank-bike-clamp.scad
+++ b/powerbank-bike-clamp.scad
@@ -50,6 +50,9 @@ strap_th = 3;
 strap_w = 5;
 strap_above = 2.5;
 
+strap_around_over = 1.0;
+strap_around_attach = 2.0;
+
 retainer_walls = [18, 30];
 
 bank_profile_scale_bodge = 1.0;
@@ -301,6 +304,21 @@ module PowerBankHolder(){ ////toplevel
                       brace_ctrs_y[1] + brace_r)
          BraceTubePlan();
       }
+
+      for (strap_y = straps_y) {
+       translate([0, strap_y, 0]) {
+         linextr(-holder_x_sz/2,
+                 +holder_x_sz/2){
+           hull(){
+             for (dy = [-1,+1] *
+                    (strap_w/2 + strap_around_attach - strap_around_over)) {
+               translate([0, dy, 0])
+                 circle(r=strap_around_over);
+             }
+           }
+         }
+       }
+      }
     }
 
     for (strap_y = straps_y)