diff --git a/hardware/mount.scad b/hardware/mount.scad
index 0a30a81..6a0e4e7 100644
--- a/hardware/mount.scad
+++ b/hardware/mount.scad
@@ -65,8 +65,18 @@ module motor_key_120 (half = false, DECOYS = false, sides = 1, ALT = false) {
 
 
 module motor_key_120_reinforced () {
+    motor_key_120();
 
+}
 
+module motor_key_120_master_mold () {
+    $fn = 200;
+    translate([54, -12, 26.4]) rotate([0, 180, 0]) motor_key_120();
+    difference() {
+        translate([0, 0, 16]) cylinder(r1= 30, r2 = 30, h = 42,  center = true);
+        translate([0, 0, 21]) cylinder(r1= 26, r2 = 26, h = 42,  center = true);
+    //translate([50, 0, 0]) cube([100, 100, 100], center = true);
+        }
 }
 
 module motor_set_screw_120 () {