diff --git a/Sasza/bron/ft1911/thumb_rest.scad b/Sasza/bron/ft1911/thumb_rest.scad
index 3f7ab45..addf34a 100644
--- a/Sasza/bron/ft1911/thumb_rest.scad
+++ b/Sasza/bron/ft1911/thumb_rest.scad
@@ -6,14 +6,32 @@ t = 1.5;
 frame_dist = 0.4;
 
 thumb_size = [12,14,t];
-thumb_fwd = 20;
+thumb_fwd = 10;
 thumb_up = 2;
 
 chain_hull() {
     cyl(d=8.5, h=2.22, anchor=TOP, $fn=36);
     down(t - frame_dist) right(thumb_fwd) fwd(thumb_up) zrot(180+45)
-        cuboid([t,thumb_size[1],t], anchor=LEFT+BOTTOM, rounding=t/2);
+        cuboid([t,thumb_size[1],t], anchor=LEFT+BOTTOM);
 }
 
-right(thumb_fwd) fwd(thumb_up) zrot(180+45) down(t - frame_dist) yrot(-90) down(t) 
-    cuboid(thumb_size, anchor=LEFT+BOTTOM, rounding=t/2);
+hinge_d = 2;
+hinge_num = 4;
+hinge_h = 3; 
+
+down(t - frame_dist) right(thumb_fwd) fwd(thumb_up) zrot(180+45) xrot(-90) difference() {
+    down(thumb_size[1]/2) right(hinge_d/2) fwd(hinge_d/2 + t + 0.1) for(i=[0 : hinge_num]) {
+        up(i * thumb_size[1] / hinge_num)
+            if(i%2==0) {
+                back(0.25) cuboid([hinge_d,hinge_d+0.5,hinge_h], rounding=1, edges="Z");
+            } else {
+                left(0.25) cuboid([hinge_d+0.5,hinge_d,hinge_h], rounding=1, edges="Z");
+
+            }
+    }
+    up(0) right(hinge_d/2) fwd(hinge_d/2 + t + 0.1) cyl(d=1, h=thumb_size[1]*2, $fn=36);
+}
+
+right(thumb_fwd) fwd(thumb_up) zrot(180+45) down(t - frame_dist) yrot(-90) down(t)
+    up(hinge_d/2 + t/2)
+    cuboid(thumb_size, anchor=LEFT+BOTTOM, rounding=t/2, edges=["X","Z", RIGHT]);