diff --git a/pressfit_cat.scad b/pressfit_cat.scad
new file mode 100644
index 0000000..b22b133
--- /dev/null
+++ b/pressfit_cat.scad
@@ -0,0 +1,15 @@
+/*
+ * requires calicat
+ *
+ * sha256sum stls/calicat.stl
+ * 17e66be81dd7285e9c8084ab858a686bf4d166f21183e958923e6a159cf40a6c  stls/calicat.stl
+ */
+
+module inserticle() {
+    cube([4.6, 7.4, 5.4], center=true);
+}
+
+difference() {
+  import("stls/calicat.stl");
+  translate([19, 11, 2.7]) rotate(90) inserticle();
+}