diff --git a/attache-cadenas/attache-cadenas.png b/attache-cadenas/attache-cadenas.png
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diff --git a/attache-cadenas/attache-cadenas.scad b/attache-cadenas/attache-cadenas.scad
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+++ b/attache-cadenas/attache-cadenas.scad
@@ -0,0 +1,17 @@
+$fn=60;
+
+include <BOSL2/std.scad>
+
+difference() {
+    union() {
+        back_half() torus(d_maj=25, d_min=10);
+    cuboid([30,18,3], rounding=1.5,  edges=[FWD+RIGHT,FWD+LEFT,BACK+RIGHT,BACK+LEFT]);
+        translate([-12.5,-5,0]) ycyl(d=10, l=10, rounding1=1);
+        translate([12.5,-5,0]) ycyl(d=10, l=10, rounding1=1);
+    }
+    translate([0,-8,0]) cuboid([15,15,4], rounding=4, edges=[FWD+RIGHT,FWD+LEFT,BACK+RIGHT,BACK+LEFT]);
+    back_half() torus(d_maj=25, d_min=5);
+    translate([-12.5,-5,0]) ycyl(d=5, l=10, rounding1=-1);
+    translate([12.5,-5,0]) ycyl(d=5, l=10, rounding1=-1);
+}
+
diff --git a/attache-cadenas/attache-cadenas.stl b/attache-cadenas/attache-cadenas.stl
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index 0000000..97b1503
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