diff --git a/猫门.scad b/猫门.scad
new file mode 100644
index 0000000..20fd091
--- /dev/null
+++ b/猫门.scad
@@ -0,0 +1,54 @@
+$fn = 20;
+
+round_corner_r = 1;
+
+length_long = 70;
+length_short = 20;
+door_thickness = 40;
+width = 8; // thickness = 8
+surface_width = width - round_corner_r * 2; // 6
+
+hook_pos = 46;
+hook_gap = 12;
+hook_length = 12;
+hook_surface_width = surface_width - round_corner_r * 2; // 4
+
+strength_cube_width = width;
+
+union() {
+    minkowski() {
+        union() {
+            cube([length_long, surface_width, surface_width]);
+            cube([surface_width, door_thickness + surface_width + round_corner_r * 2, surface_width]);
+            translate([0, surface_width + round_corner_r * 2 + door_thickness, 0])
+                cube([length_short, surface_width, surface_width]);
+        }
+        sphere(r = round_corner_r);
+    }
+
+    minkowski() {
+        union() {
+            translate([hook_pos, - hook_gap - round_corner_r, round_corner_r])
+                cube([hook_surface_width, hook_gap + width *0.7, hook_surface_width]);
+            translate([hook_pos - hook_length, - hook_gap - round_corner_r, round_corner_r])
+                cube([hook_length, hook_surface_width, hook_surface_width]);
+            translate([hook_pos + surface_width - round_corner_r * 2, -round_corner_r, round_corner_r])
+                linear_extrude(height=hook_surface_width)
+                    polygon([
+                        [0, 0],
+                        [0, -12],
+                        [12, 0],
+                    ]);
+            translate([hook_pos - hook_surface_width * 2 - round_corner_r * 2, -round_corner_r, round_corner_r])
+                linear_extrude(height=hook_surface_width)
+                    polygon([
+                        [12, -12],
+                        [0, -12],
+                        [12, 0],
+                    ]);
+            
+        }
+        sphere(r = round_corner_r);
+    }
+}
+